2020-04-24 07:02:23

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package bai1;

import java.io.FileInputStream;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

/**
 *
 * @author PC
 */
public class Main {
    public static void main(String[] args) throws Exception {

        FileInputStream fis = new FileInputStream("aptech_class.xml");
        
        SAXParserFactory factory = SAXParserFactory.newInstance();
	SAXParser saxParser = factory.newSAXParser();
        
        AptechClassHandler aptechClassHandler = new AptechClassHandler();
        
        saxParser.parse(fis, aptechClassHandler);
        
        aptechClassHandler.display();
    }
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package bai1;

import java.util.ArrayList;
import java.util.List;

/**
 *
 * @author PC
 */
public class AptechClass {
    String classname, address;

    Teacher teacher;

    List<Student> studentList   = new ArrayList<>();

    public AptechClass() {
    }

    public String getClassname() {
        return classname;
    }

    public void setClassname(String classname) {
        this.classname = classname;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public Teacher getTeacher() {
        return teacher;
    }

    public void setTeacher(Teacher teacher) {
        this.teacher = teacher;
    }

    public List<Student> getStudentList() {
        return studentList;
    }

    public void setStudentList(List<Student> studentList) {
        this.studentList = studentList;
    }
    
    public void display() {
        System.out.format("\nClass Name: %s, Address: %s", classname, address);
        System.out.println("Teacher's Detail information: ");
        System.out.println(teacher);
        System.out.println("Student List: ");
        for (Student student : studentList) {
            System.out.println(student);
        }
    }
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package bai1;

/**
 *
 * @author PC
 */
public class Teacher {
    String fullname,
String address;
    int age;

    public Teacher() {
    }

    public Teacher(String fullname, String address, int age) {
        this.fullname = fullname;
        this.address = address;
        this.age = age;
    }

    public String getFullname() {
        return fullname;
    }

    public void setFullname(String fullname) {
        this.fullname = fullname;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Teacher{" + "fullname=" + fullname + ", address=" + address + ", age=" + age + '}';
    }
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package bai1;

import java.util.ArrayList;
import java.util.List;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

/**
 *
 * @author PC
 */
public class AptechClassHandler extends DefaultHandler{
    List<AptechClass> classList = new ArrayList<>();

    AptechClass currentClass = null;
    Student currentStudent = null;
    
    boolean isClassName = false;
    boolean isAddress = false;

    boolean isTeacher = false;
    boolean isFullname = false;
    boolean isAge = false;
    boolean isStudent = false;

    
    @Override
    public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
        if(qName.equalsIgnoreCase("class")) {
            currentClass = new AptechClass();

        } else if(qName.equalsIgnoreCase("classname")) {
            isClassName = true;
        } else if(qName.equalsIgnoreCase("address")) {
            isAddress = true;
        } else if(qName.equalsIgnoreCase("teacher")) {
            isTeacher = true;
            Teacher teacher = new Teacher();

            currentClass.setTeacher(teacher);
        } else if(qName.equalsIgnoreCase("fullname")) {
            isFullname = true;
        } else if(qName.equalsIgnoreCase("age")) {
            isAge = true;
        } else if(qName.equalsIgnoreCase("student")) {
            isStudent = true;
            currentStudent = new Student();
        }
    }

    @Override
    public void endElement(String uri, String localName, String qName) throws SAXException {
        if(qName.equalsIgnoreCase("class")) {
            classList.add(currentClass);
            currentClass = null;
        } else if(qName.equalsIgnoreCase("classname")) {
            isClassName = false;

        } else if(qName.equalsIgnoreCase("address")) {
            isAddress = false;
        } else if(qName.equalsIgnoreCase("teacher")) {
            isTeacher = false;

        } else if(qName.equalsIgnoreCase("fullname")) {
            isFullname = false;
        } else if(qName.equalsIgnoreCase("age")) {
            isAge = false;
        } else if(qName.equalsIgnoreCase("student")) {
            isStudent = false;

            currentClass.getStudentList().add(currentStudent);
            currentStudent = null;
        }
    }

    @Override
    public void characters(char[] ch, int start, int length) throws SAXException {
        String value = new String(ch, start, length);
        
        if(isClassName) {

            currentClass.setClassname(value);
        } else if(isAddress) {
            if(isTeacher) {
                currentClass.getTeacher().setAddress(value);
            } else if(isStudent) {
                currentStudent.setAddress(value);
            } else {
                currentClass.setAddress(value);
            }
        } else if(isFullname) {
            if(isTeacher) {
                currentClass.getTeacher().setFullname(value);
            } else if(isStudent) {
                currentStudent.setFullname(value);
            }
        } else if(isAge) {
            if(isTeacher) {
                currentClass.getTeacher().setAge(Integer.parseInt(value));
            } else if(isStudent) {
                currentStudent.setAge(Integer.parseInt(value));
            }
        }
    }
    
    public void display() {
        for (AptechClass aptechClass : classList) {
            aptechClass.display();
        }
    }
}

2020-04-18 15:36:25

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package XML;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

/**
 *
 * @author ASUS
 */
public class Main {
    public static void main(String[] args) throws Exception {
        
        FileInputStream fis=new FileInputStream("C:\\Users\\ASUS\\Documents\\NetBeansProjects\\yyy\\src\\XML\\student.xml");
        SAXParserFactory fac=SAXParserFactory.newInstance();
        SAXParser sax=fac.newSAXParser();
        parser pa=new parser();
        sax.parse(fis, pa);
        pa.display();
    }
}
>>>>>>>>
/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package XML;

/**
 *
 * @author ASUS
 */
public class Student {
   String name,address;
   int age;

    public Student() {
    }

    public Student(String name, String address, int age) {
        this.name = name;
        this.address = address;
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Student{" + "name=" + name + ", address=" + address + ", age=" + age + '}';
    }
   
}
>>>>>
/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package XML;

import java.util.ArrayList;
import java.util.List;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

/**
 *
 * @author ASUS
 */
public class parser extends DefaultHandler {

    List<teacher> tealist = new ArrayList<>();
    teacher tea = null;
    boolean isName = false;
    boolean isTeachername = false;
    boolean isAge = false;
    boolean isAddress = false;
    boolean isStudent=false;
    @Override
    public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
        if (qName.equalsIgnoreCase("class")) {
          tea=new teacher();
        }else if(qName.equalsIgnoreCase("name")){
            isName=true;
        }else if(qName.equalsIgnoreCase("teachername")){
            isTeachername=true;
        }else if(qName.equalsIgnoreCase("address")){
            isAddress=true;
        }else if(qName.equalsIgnoreCase("age")){
            isAge=true;
        }else if(qName.equalsIgnoreCase("student")){
            isStudent=true;
            Student thao=new Student();
            tea.setThao(thao);
        }
    }

    @Override
    public void endElement(String uri, String localName, String qName) throws SAXException {
       if(qName.equalsIgnoreCase("class")){
           tealist.add(tea);
           tea=null;
       }else if(qName.equalsIgnoreCase("name")){
           isName=false;
       }else if(qName.equalsIgnoreCase("teachername")){
           isTeachername=false;
       }else if(qName.equalsIgnoreCase("address")){
           isAddress=false;
       }else if(qName.equalsIgnoreCase("age")){
           isAge=false;
       }else if(qName.equalsIgnoreCase("student")){
           isStudent=false;
       }
    }

    @Override
    public void characters(char[] ch, int start, int length) throws SAXException {
      String valuu=new String(ch,start,length);
      if(isName){
          if(isStudent){
              tea.thao.setName(valuu);
          }else{
              tea.setName(valuu);
          }
      }else if(isTeachername){
          tea.setTeachername(valuu);
      }else if(isAddress){
          if(isStudent){
              tea.thao.setAddress(valuu);
          }else{
              tea.setAddress(valuu);
          }
      }else if(isAge){
         if(isStudent){
             tea.thao.setAge(Integer.parseInt(valuu));
         }else{
              tea.setAge(Integer.parseInt(valuu));
         }
      }
    }
public void display(){
    for (teacher teaaa : tealist) {
        teaaa.display();
    }
}
}
>>>>>>
<?xml version="1.0" encoding="UTF-8"?>
<!--
To change this license header, choose License Headers in Project Properties.
To change this template file, choose Tools | Templates
and open the template in the editor.
-->



    <class_list title="sdsd" abc="sasd">
        <class>
            <name>A</name>
            <teachname>nguyen van a</teachname>
            
            <address>FPT</address>
            <student_list>
                <student>
                    <name> nguyen van huy</name>
                    
                    <address>Duong Quang Ham</address>
                </student>
                <student>
                    <name> nguyen van B</name>
                    
                    <address>Duong Quang Ham</address>
                </student>
            </student_list>
        </class>
        <class>
            <name>AA</name>
            <teachername>Nguyen Văn B</teachername>
           
            <address>FPT Aptech</address>
            <student_list>
                <student>
                    <name>nguyen van A</name>
                    
                    <address>Ha Noi</address>
                </student>
                <student>
                    <name>nguyen van  B</name>
                    
                    <address>Thai Binh</address>
                </student>
            </student_list>
        </class>
    </class_list>
>>>>>
/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package XML;

import java.util.ArrayList;
import java.util.List;

/**
 *
 * @author ASUS
 */
public class teacher {

    String name, teachername, address;
    int age;
    Student thao;

    public teacher() {
    }

    public teacher(String name, String teachername, String address, int age, Student thao) {
        this.name = name;
        this.teachername = teachername;
        this.address = address;
        this.age = age;
        this.thao = thao;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getTeachername() {
        return teachername;
    }

    public void setTeachername(String teachername) {
        this.teachername = teachername;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public Student getThao() {
        return thao;
    }

    public void setThao(Student thao) {
        this.thao = thao;
    }

    
    public void display(){
        System.out.format("\nName:%s,Teachername:%s,Address:%s,Age:%s",name,teachername,address,age);
        System.out.println(thao);
    }
}

2020-04-18 14:24:03

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package ls1;

import java.io.FileInputStream;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

/**
 *
 * @author Anh Quan
 */
public class Main {
    public static void main(String[] args) throws Exception {
        //doc noi dung tu file xml.
        FileInputStream fis = new FileInputStream("aptech_class.xml");
        
        SAXParserFactory factory = SAXParserFactory.newInstance();
	SAXParser saxParser = factory.newSAXParser();
        
        AptechClassHandler aptechClassHandler = new AptechClassHandler();
        
        saxParser.parse(fis, aptechClassHandler);
        
        aptechClassHandler.display();
    }
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package ls1;

import java.util.ArrayList;
import java.util.List;

/**
 *
 * @author Anh Quan
 */
public class AptechClass {
    String classname, address;
    Teacher teacher;
    List<Student> studentList = new ArrayList<>();

    public AptechClass() {
    }

    public String getClassname() {
        return classname;
    }

    public void setClassname(String classname) {
        this.classname = classname;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public Teacher getTeacher() {
        return teacher;
    }

    public void setTeacher(Teacher teacher) {
        this.teacher = teacher;
    }

    public List<Student> getStudentList() {
        return studentList;
    }

    public void setStudentList(List<Student> studentList) {
        this.studentList = studentList;
    }
    
    public void display() {
        System.out.format("\nClass Name: %s, Address: %s", classname, address);
        System.out.println("Teacher's Detail information: ");
        System.out.println(teacher);
        System.out.println("Student List: ");
        for (Student student : studentList) {
            System.out.println(student);
        }
    }
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package ls1;

/**
 *
 * @author Anh Quan
 */
public class Teacher {
    String fullname, address;
    int age;

    public Teacher() {
    }

    public Teacher(String fullname, String address, int age) {
        this.fullname = fullname;
        this.address = address;
        this.age = age;
    }

    public String getFullname() {
        return fullname;
    }

    public void setFullname(String fullname) {
        this.fullname = fullname;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Teacher{" + "fullname=" + fullname + ", address=" + address + ", age=" + age + '}';
    }
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package ls1;

/**
 *
 * @author Anh Quan
 */
public class Student {
    String fullname, address;
    int age;

    public Student(String fullname, String address, int age) {
        this.fullname = fullname;
        this.address = address;
        this.age = age;
    }

    public Student() {
    }

    public String getFullname() {
        return fullname;
    }

    public void setFullname(String fullname) {
        this.fullname = fullname;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Student{" + "fullname=" + fullname + ", address=" + address + ", age=" + age + '}';
    }
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package ls1;

import java.util.ArrayList;
import java.util.List;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

/**
 *
 * @author Anh Quan
 */
public class AptechClassHandler extends DefaultHandler{
    List<AptechClass> classList = new ArrayList<>();
    AptechClass currentClass = null;
    Student currentStudent = null;
    
    boolean isClassName = false;
    boolean isAddress = false;
    boolean isTeacher = false;
    boolean isFullname = false;
    boolean isAge = false;
    boolean isStudent = false;
    
    @Override
    public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
        if(qName.equalsIgnoreCase("class")) {
            currentClass = new AptechClass();
        } else if(qName.equalsIgnoreCase("classname")) {
            isClassName = true;
        } else if(qName.equalsIgnoreCase("address")) {
            isAddress = true;
        } else if(qName.equalsIgnoreCase("teacher")) {
            isTeacher = true;
            Teacher teacher = new Teacher();
            currentClass.setTeacher(teacher);
        } else if(qName.equalsIgnoreCase("fullname")) {
            isFullname = true;
        } else if(qName.equalsIgnoreCase("age")) {
            isAge = true;
        } else if(qName.equalsIgnoreCase("student")) {
            isStudent = true;
            currentStudent = new Student();
        }
    }

    @Override
    public void endElement(String uri, String localName, String qName) throws SAXException {
        if(qName.equalsIgnoreCase("class")) {
            classList.add(currentClass);
            currentClass = null;
        } else if(qName.equalsIgnoreCase("classname")) {
            isClassName = false;
        } else if(qName.equalsIgnoreCase("address")) {
            isAddress = false;
        } else if(qName.equalsIgnoreCase("teacher")) {
            isTeacher = false;
        } else if(qName.equalsIgnoreCase("fullname")) {
            isFullname = false;
        } else if(qName.equalsIgnoreCase("age")) {
            isAge = false;
        } else if(qName.equalsIgnoreCase("student")) {
            isStudent = false;
            currentClass.getStudentList().add(currentStudent);
            currentStudent = null;
        }
    }

    @Override
    public void characters(char[] ch, int start, int length) throws SAXException {
        String value = new String(ch, start, length);
        
        if(isClassName) {
            currentClass.setClassname(value);
        } else if(isAddress) {
            if(isTeacher) {
                currentClass.getTeacher().setAddress(value);
            } else if(isStudent) {
                currentStudent.setAddress(value);
            } else {
                currentClass.setAddress(value);
            }
        } else if(isFullname) {
            if(isTeacher) {
                currentClass.getTeacher().setFullname(value);
            } else if(isStudent) {
                currentStudent.setFullname(value);
            }
        } else if(isAge) {
            if(isTeacher) {
                currentClass.getTeacher().setAge(Integer.parseInt(value));
            } else if(isStudent) {
                currentStudent.setAge(Integer.parseInt(value));
            }
        }
    }
    
    public void display() {
        for (AptechClass aptechClass : classList) {
            aptechClass.display();
        }
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<!--
To change this license header, choose License Headers in Project Properties.
To change this template file, choose Tools | Templates
and open the template in the editor.
-->


<class_list title="sdsd" abc="sasd">
	<class>
		<classname>T1907A</classname>
		<address>8 Ton That Thuyet, Cau Giay, HN</address>
		<teacher>
			<fullname>Tran Van Diep</fullname>
			<age>30</age>
			<address>Ha Noi</address>
		</teacher>
		<student_list>
			<student>
				<fullname>Tran Anh Quan</fullname>
				<age>19</age>
				<address>Ha Noi</address>
			</student>
			<student>
				<fullname>Tran Anh Tu</fullname>
				<age>19</age>
				<address>Ha Noi</address>
			</student>
			<student>
				<fullname>Tran Anh Hung</fullname>
				<age>19</age>
				<address>Ha Noi</address>
			</student>
		</student_list>
	</class>
	<class>
		<classname>T1908K</classname>
		<address>8 Ton That Thuyet, Cau Giay, HN</address>
		<teacher>
			<fullname>Nguyen Tuan</fullname>
			<age>30</age>
			<address>Ha Noi</address>
		</teacher>
		<student_list>
			<student>
				<fullname>Tran Anh A</fullname>
				<age>19</age>
				<address>Ha Noi</address>
			</student>
			<student>
				<fullname>Tran Anh B</fullname>
				<age>19</age>
				<address>Ha Noi</address>
			</student>
			<student>
				<fullname>Tran Anh C</fullname>
				<age>19</age>
				<address>Ha Noi</address>
			</student>
		</student_list>
	</class>
</class_list>

2020-04-17 05:56:26

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package aptechclass;

import java.io.FileInputStream;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
/**
 *
 * @author abc
 */
public class Main {
    public static void main(String[] args)  throws Exception 
    {
        FileInputStream fis = new FileInputStream("student.xml");
        
        SAXParserFactory factory = SAXParserFactory.newInstance();
        SAXParser saxParser = factory.newSAXParser();
        
        AptechClasshandler aptechClasshandler = new AptechClasshandler();
        
        saxParser.parse(fis, aptechClasshandler);
        
        aptechClasshandler.display();
    }
    
}
/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package aptechclass;

/**
 *
 * @author abc
 */
public class Student {
    String fullname ,address ;
    int age ;
    
    public Student()
    {
        
    }

    public Student(String fullname, String address, int age) {
        this.fullname = fullname;
        this.address = address;
        this.age = age;
    }

    public String getFullname() {
        return fullname;
    }

    public void setFullname(String fullname) {
        this.fullname = fullname;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Student{" + "fullname=" + fullname + ", address=" + address + ", age=" + age + '}';
    }
    
    
}
/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package aptechclass;

/**
 *
 * @author abc
 */
public class Teacher {
    String fullname , address ;
    int age ;
    
    public Teacher()
    {
        
    }

    public Teacher(String fullname, String address, int age) {
        this.fullname = fullname;
        this.address = address;
        this.age = age;
    }

    public String getFullname() {
        return fullname;
    }

    public void setFullname(String fullname) {
        this.fullname = fullname;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Teacher{" + "fullname=" + fullname + ", address=" + address + ", age=" + age + '}';
    }
    
    
}
/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package aptechclass;

import java.util.ArrayList;
import java.util.List;
import jdk.internal.org.xml.sax.SAXException;
import jdk.internal.org.xml.sax.helpers.DefaultHandler;

/**
 *
 * @author abc
 */
public class AptechClasshandler extends DefaultHandler {
    List<AptechClass> classList = new ArrayList<>();
    AptechClass currentClass = null;
    Student currentStudent = null;
    // neu co list thi phai dung
    
    boolean isClassName = false ;
    boolean isAddress = false;
    boolean isTeacher = false;
    boolean isFullname = false;
    boolean isAge = false;
    boolean isStudent = false;
    

    @Override
    public void startElement(String url , String localName , String qName) throws SAXException {
        if(qName.equalsIgnoreCase("class"))
        {
            currentClass = new AptechClass();
        }
        else if(qName.equalsIgnoreCase("classname"))
        {
            isClassName = true;
        }
        else if(qName.equalsIgnoreCase("address"))
        {
            isAddress = true;
        }
        else if(qName.equalsIgnoreCase("teacher"))
        {
            isTeacher = true;
            Teacher teacher = new Teacher();
            currentClass.setTeacher(teacher);
        }
        else if(qName.equalsIgnoreCase("fullname"))
        {
            isFullname = true;
        }
        else if(qName.equalsIgnoreCase("age"))
        {
            isAge = true;
        }
        else if(qName.equalsIgnoreCase("student"))
        {
            isStudent = true;
            currentStudent = new Student();
        }
        
        
        
    }
    
    @Override
    public void endElement(String uri, String localName, String qName) throws SAXException {
        if(qName.equalsIgnoreCase("class")) {
            classList.add(currentClass);
            currentClass = null;
        } else if(qName.equalsIgnoreCase("classname")) {
            isClassName = false;
        } else if(qName.equalsIgnoreCase("address")) {
            isAddress = false;
        } else if(qName.equalsIgnoreCase("teacher")) {
            isTeacher = false;
        } else if(qName.equalsIgnoreCase("fullname")) {
            isFullname = false;
        } else if(qName.equalsIgnoreCase("age")) {
            isAge = false;
        } else if(qName.equalsIgnoreCase("student")) {
            isStudent = false;
            currentClass.getStudentList().add(currentStudent);
            currentStudent = null;
        }
    }
    
     @Override
    public void characters(char[] ch, int start, int length) throws SAXException {
        String value = new String(ch, start, length);
        
        if(isClassName) {
            currentClass.setClassname(value);
        } else if(isAddress) {
            if(isTeacher) {
                currentClass.getTeacher().setAddress(value);
            } else if(isStudent) {
                currentStudent.setAddress(value);
            } else {
                currentClass.setAddress(value);
            }
        } else if(isFullname) {
            if(isTeacher) {
                currentClass.getTeacher().setFullname(value);
            } else if(isStudent) {
                currentStudent.setFullname(value);
            }
        } else if(isAge) {
            if(isTeacher) {
                currentClass.getTeacher().setAge(Integer.parseInt(value));
            } else if(isStudent) {
                currentStudent.setAge(Integer.parseInt(value));
            }
        }
    }
    
    public void display()
    {
        for (AptechClass aptechClass : classList)
        {
            aptechClass.display();
        }
    }
           
    
    
}
/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package aptechclass;

import java.io.FileInputStream;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
/**
 *
 * @author abc
 */
public class Main {
    public static void main(String[] args)  throws Exception 
    {
        FileInputStream fis = new FileInputStream("student.xml");
        
        SAXParserFactory factory = SAXParserFactory.newInstance();
        SAXParser saxParser = factory.newSAXParser();
        
        AptechClasshandler aptechClasshandler = new AptechClasshandler();
        
        saxParser.parse(fis, aptechClasshandler);
        
        aptechClasshandler.display();
    }
    
}

2020-04-16 14:16:08

<?xml version="1.0" encoding="UTF-8"?>

<class_list title="sdsd" abc="sasd">
	<class>
		<classname>T1907A</classname>
		<address>8 Ton That Thuyet, Cau Giay, HN</address>
		<teacher>
			<fullname>Tran Van Diep</fullname>
			<age>32</age>
			<address>Nam Dinh</address>
		</teacher>
		<student_list>
			<student>
				<fullname>Duong Thanh Binh</fullname>
				<age>18</age>
				<address>Ha Noi</address>
			</student>
			<student>
				<fullname>Phi Van Long</fullname>
				<age>18</age>
				<address>Ha Noi</address>
			</student>
			<student>
				<fullname>Nguyen Minh Duy</fullname>
				<age>18</age>
				<address>Ha Noi</address>
			</student>
		</student_list>
	</class>
	<class>
		<classname>T1907E</classname>
		<address>8 Ton That Thuyet, Cau Giay, HN</address>
		<teacher>
			<fullname>Nguy Tuan</fullname>
			<age>32</age>
			<address>Ha Noi</address>
		</teacher>
		<student_list>
			<student>
				<fullname>Nguyen Van Phuong</fullname>
				<age>18</age>
				<address>Ha Noi</address>
			</student>
			<student>
				<fullname>Nguyen Minh Nghia</fullname>
				<age>18</age>
				<address>Ha Noi</address>
			</student>
			<student>
				<fullname>Duong Thanh B</fullname>
				<age>18</age>
				<address>Ha Noi</address>
			</student>
		</student_list>
	</class>
</class_list>

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package Lession1;
import java.io.FileInputStream;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
/**
 *
 * @author Administrator
 */
public class Main {
     public static void main(String[] args) throws Exception {
        FileInputStream fis = new FileInputStream("aptech_class.xml");
        
        SAXParserFactory factory = SAXParserFactory.newInstance();
	SAXParser saxParser = factory.newSAXParser();
        
        AptechClassHandler aptechClassHandler = new AptechClassHandler();
        
        saxParser.parse(fis, aptechClassHandler);
        
        aptechClassHandler.display();
    }
    
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package Lession1;
import java.util.ArrayList;
import java.util.List;

/**
 *
 * @author Administrator
 */
public class AptechClass {
    String classname, address;
    Teacher teacher;
    List<Student> studentList = new ArrayList<>();

    public AptechClass() {
    }

    public String getClassname() {
        return classname;
    }

    public void setClassname(String classname) {
        this.classname = classname;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public Teacher getTeacher() {
        return teacher;
    }

    public void setTeacher(Teacher teacher) {
        this.teacher = teacher;
    }

    public List<Student> getStudentList() {
        return studentList;
    }

    public void setStudentList(List<Student> studentList) {
        this.studentList = studentList;
    }
    
    public void display() {
        System.out.format("\nClass Name: %s, Address: %s", classname, address);
        System.out.println("Teacher's Detail information: ");
        System.out.println(teacher);
        System.out.println("Student List: ");
        for (Student student : studentList) {
            System.out.println(student);
        }
    }
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package Lession1;

/**
 *
 * @author Administrator
 */
public class Teacher {
    String fullname, address;
    int age;

    public Teacher() {
    }

    public Teacher(String fullname, String address, int age) {
        this.fullname = fullname;
        this.address = address;
        this.age = age;
    }

    public String getFullname() {
        return fullname;
    }

    public void setFullname(String fullname) {
        this.fullname = fullname;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Teacher{" + "fullname=" + fullname + ", address=" + address + ", age=" + age + '}';
    }
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package Lession1;

/**
 *
 * @author Administrator
 */
public class Student {
     String fullname, address;
    int age;

    public Student(String fullname, String address, int age) {
        this.fullname = fullname;
        this.address = address;
        this.age = age;
    }

    public Student() {
    }

    public String getFullname() {
        return fullname;
    }

    public void setFullname(String fullname) {
        this.fullname = fullname;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Student{" + "fullname=" + fullname + ", address=" + address + ", age=" + age + '}';
    }
    
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package Lession1;

import java.util.ArrayList;
import java.util.List;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

/**
 *
 * @author Administrator
 */
public class AptechClassHandler extends DefaultHandler {
    List<AptechClass> classList = new ArrayList<>();
    AptechClass currentClass = null;
    Student currentStudent = null;
    
    boolean isClassName = false;
    boolean isAddress = false;
    boolean isTeacher = false;
    boolean isFullname = false;
    boolean isAge = false;
    boolean isStudent = false;
    
    @Override
    public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
        if(qName.equalsIgnoreCase("class")) {
            currentClass = new AptechClass();
        } else if(qName.equalsIgnoreCase("classname")) {
            isClassName = true;
        } else if(qName.equalsIgnoreCase("address")) {
            isAddress = true;
        } else if(qName.equalsIgnoreCase("teacher")) {
            isTeacher = true;
            Teacher teacher = new Teacher();
            currentClass.setTeacher(teacher);
        } else if(qName.equalsIgnoreCase("fullname")) {
            isFullname = true;
        } else if(qName.equalsIgnoreCase("age")) {
            isAge = true;
        } else if(qName.equalsIgnoreCase("student")) {
            isStudent = true;
            currentStudent = new Student();
        }
    }

    @Override
    public void endElement(String uri, String localName, String qName) throws SAXException {
        if(qName.equalsIgnoreCase("class")) {
            classList.add(currentClass);
            currentClass = null;
        } else if(qName.equalsIgnoreCase("classname")) {
            isClassName = false;
        } else if(qName.equalsIgnoreCase("address")) {
            isAddress = false;
        } else if(qName.equalsIgnoreCase("teacher")) {
            isTeacher = false;
        } else if(qName.equalsIgnoreCase("fullname")) {
            isFullname = false;
        } else if(qName.equalsIgnoreCase("age")) {
            isAge = false;
        } else if(qName.equalsIgnoreCase("student")) {
            isStudent = false;
            currentClass.getStudentList().add(currentStudent);
            currentStudent = null;
        }
    }

    @Override
    public void characters(char[] ch, int start, int length) throws SAXException {
        String value = new String(ch, start, length);
        
        if(isClassName) {
            currentClass.setClassname(value);
        } else if(isAddress) {
            if(isTeacher) {
                currentClass.getTeacher().setAddress(value);
            } else if(isStudent) {
                currentStudent.setAddress(value);
            } else {
                currentClass.setAddress(value);
            }
        } else if(isFullname) {
            if(isTeacher) {
                currentClass.getTeacher().setFullname(value);
            } else if(isStudent) {
                currentStudent.setFullname(value);
            }
        } else if(isAge) {
            if(isTeacher) {
                currentClass.getTeacher().setAge(Integer.parseInt(value));
            } else if(isStudent) {
                currentStudent.setAge(Integer.parseInt(value));
            }
        }
    }
    
    public void display() {
        for (AptechClass aptechClass : classList) {
            aptechClass.display();
        }
    }
}

2020-04-16 10:24:40

<?xml version="1.0" encoding="UTF-8"?>

<classaptech_list>
 <class>
      <name>A1</name>
      <teachername>Trần Văn A</teachername>
      <studentnumber>20</studentnumber>
      <address>FPT Aptech</address>
  <student_list>
      <student>
         <name>Trần Mạnh Dũng</name>
         <age>18</age>
         <phone>0123456789</phone>
      </student>
      <student>
         <name>Trần Yếu Dũng</name>
         <age>18</age>
         <phone>0987654321</phone>
      </student>
  </student_list>
</class>
<class>
     <name>A2</name>
     <teachername>Trần Văn B</teachername>
     <studentnumber>20</studentnumber>
     <address>FPT Aptech</address>
  <student_list>
       <student>
          <name>Trần Mạnh A</name>
          <age>18</age>
          <phone>09358345</phone>
       </student>
       <student>
          <name>Trần Mạnh B</name>
          <age>18</age>
          <phone>098734634</phone>
       </student>
  </student_list>
</class>
</classaptech_list>

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package aptech;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

/**
 *
 * @author admin
 */
public class Main{

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws Exception {
        // TODO code application logic here
        FileInputStream fis = new FileInputStream("text.xml");
        
        SAXParserFactory factory = SAXParserFactory.newInstance();
        SAXParser saxParser = factory.newSAXParser();
        AptechClassHandler aptechClassHandler = new AptechClassHandler();  
    
        saxParser.parse(fis, aptechClassHandler);
        
        aptechClassHandler.display();
    }
    
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package aptech;

import java.util.ArrayList;
import java.util.List;

/**
 *
 * @author admin
 */
public class AptechClass {
    String name, teachername, address, studentnumber;
    

    Student student;
    
    List<Student> studentList = new ArrayList<>();

    public AptechClass() {
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getTeachername() {
        return teachername;
    }

    public void setTeachername(String teachername) {
        this.teachername = teachername;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public String getStudentnumber() {
        return studentnumber;
    }

    public void setStudentnumber(String studentnumber) {
        this.studentnumber = studentnumber;
    }

    public Student getStudent() {
        return student;
    }

    public void setStudent(Student student) {
        this.student = student;
    }

    public List<Student> getStudentList() {
        return studentList;
    }

    public void setStudentList(List<Student> studentList) {
        this.studentList = studentList;
    }
    
    public void display(){
        System.out.format("Class Name: %s, TeacherName: %s, Address: %s, StudentNumber: %s", name, teachername, address, studentnumber);
        System.out.println("\nStudent List: ");
        for (Student student : studentList) {
            System.out.println(student);
        }
    }
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package aptech;

/**
 *
 * @author admin
 */
public class Student {
    String name, phone;
    int age;

    public Student() {
    }

    public Student(String name, String phone, int age) {
        this.name = name;
        this.phone = phone;
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Student{" + "name=" + name + ", phone=" + phone + ", age=" + age + '}';
    }

    
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package aptech;

import java.util.ArrayList;
import java.util.List;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

/**
 *
 * @author admin
 */
public class AptechClassHandler extends DefaultHandler{
    List<AptechClass> classList = new ArrayList<>();
    AptechClass currentClass = null;
    Student currentStudent = null;
    
    boolean isName = false;
    boolean isTeachername = false;
    boolean isStudentnumber = false;
    boolean isAddress = false;
    boolean isStudent = false;
    boolean isAge = false;
    boolean isPhone = false;
    
    @Override
    public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
        if(qName.equalsIgnoreCase("class")){
            currentClass = new AptechClass();
        }else if(qName.equalsIgnoreCase("name")){
            isName = true;
        }else if(qName.equalsIgnoreCase("teachername")){
            isTeachername = true;
        }else if(qName.equalsIgnoreCase("studentnumber")){
            isStudentnumber = true;
        }else if(qName.equalsIgnoreCase("address")){
            isAddress = true;
        }else if(qName.equalsIgnoreCase("student")){
            isStudent = true;
            currentStudent = new Student();
        }else if(qName.equalsIgnoreCase("age")){
            isAge = true;
        }else if(qName.equalsIgnoreCase("phone")){
            isPhone = true;
        }
    }

    @Override
    public void endElement(String uri, String localName, String qName) throws SAXException {
        if(qName.equalsIgnoreCase("class")){
            classList.add(currentClass);
            currentClass = null;
        }else if(qName.equalsIgnoreCase("name")){
            isName = false;
        }else if(qName.equalsIgnoreCase("teachername")){
            isTeachername = false;
        }else if(qName.equalsIgnoreCase("studentnumber")){
            isStudentnumber = false;
        }else if(qName.equalsIgnoreCase("address")){
            isAddress = false;
        }else if(qName.equalsIgnoreCase("student")){
            isStudent = false;
            currentClass.getStudentList().add(currentStudent);
            currentStudent = null;
        }else if(qName.equalsIgnoreCase("age")){
            isAge = false;
        }else if(qName.equalsIgnoreCase("phone")){
            isPhone = false;
        }
    }

    @Override
    public void characters(char[] ch, int start, int length) throws SAXException {
        String value = new String(ch, start, length);
        
        if(isName){
            
            if (isStudent){
                currentStudent.setName(value);
            } else{
                currentClass.setName(value);
            }  
        }else if(isTeachername){
            currentClass.setTeachername(value);
        }else if(isAddress){
        currentClass.setAddress(value);
        }
        else if(isStudentnumber){
            currentClass.setStudentnumber(value);
        }else if(isAge){
            currentStudent.setAge(Integer.parseInt(value));
        }else if(isPhone){
            currentStudent.setPhone(value);
        }
    }
    
    public void display(){
        for (AptechClass aptechClass : classList) {
            aptechClass.display();
        }
    }
}

2020-04-15 16:32:27

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package studentxml;

import java.util.ArrayList;
import java.util.List;

/**
 *
 * @author Administrator
 */
public class AptechClass {
    String classname, address;
    Teacher teacher;
    List<Student> studentList = new ArrayList<>();

    public AptechClass() {
    }

    public Teacher getTeacher() {
        return teacher;
    }

    public void setTeacher(Teacher teacher) {
        this.teacher = teacher;
    }

    public String getClassname() {
        return classname;
    }

    public void setClassname(String classname) {
        this.classname = classname;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }
    
    public List<Student> getStudentList() {
        return studentList;
    }

    public void setStudentList(List<Student> studentList) {
        this.studentList = studentList;
    }
    
    public void display(){
        System.out.format("\nClass Name: %s, Address: %s", classname, address);
        System.out.println("Teacher's detail information");
        System.out.println(teacher);
        System.out.println("Student List :");
        for (Student student : studentList) {
            System.out.println(student);
        }
        
    }
    
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package studentxml;

import java.util.ArrayList;
import java.util.List;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

/**
 *
 * @author Administrator
 */
public class AptechClassHandler extends DefaultHandler{
    List<AptechClass> classList = new ArrayList<>();
    AptechClass currentClass = null;
    Student currentStudent = null;
    
    boolean isClassName = false;
    boolean isAddress = false;
    boolean isTeacher = false;
    boolean isFullname = false;
    boolean isAge = false;
    boolean isStudent = false;
    
    @Override
    public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
        if(qName.equalsIgnoreCase("class")){
            currentClass = new AptechClass();
        }else if(qName.equalsIgnoreCase("classname")){
            isClassName = true;
        }else if(qName.equalsIgnoreCase("address")){
            isAddress = true;
        }else if(qName.equalsIgnoreCase("teacher")){
            isTeacher = true;
            Teacher teacher = new Teacher();
            currentClass.setTeacher(teacher);
        }else if(qName.equalsIgnoreCase("fullname")){
            isFullname = true;
        }else if(qName.equalsIgnoreCase("age")){
            isAge = true;
        }else if(qName.equalsIgnoreCase("student")){
            isStudent = true;
            currentStudent = new Student();
        }
    }

    @Override
    public void endElement(String uri, String localName, String qName) throws SAXException {
       if(qName.equalsIgnoreCase("class")){
           classList.add(currentClass); 
           currentClass = null;
        }else if(qName.equalsIgnoreCase("classname")){
            isClassName = false;
        }else if(qName.equalsIgnoreCase("address")){
            isAddress = false;
        }else if(qName.equalsIgnoreCase("teacher")){
            isTeacher = false;
        }else if(qName.equalsIgnoreCase("fullname")){
            isFullname = false;
        }else if(qName.equalsIgnoreCase("age")){
            isAge = false;
        }else if(qName.equalsIgnoreCase("student")){
            isStudent = false;
            currentClass.getStudentList().add(currentStudent);
            currentStudent = null;
        }
       
    }

    @Override
    public void characters(char[] ch, int start, int length) throws SAXException {
        String value = new String(ch, start, length);
        
        if(isClassName){
            currentClass.setClassname(value);
        }else if(isAddress){
            if(isTeacher){
                currentClass.getTeacher().setAddress(value);
            }else if(isStudent){
                currentStudent.setAddress(value);
            }
        }else if(isFullname){
            if(isTeacher){
                currentClass.getTeacher().setFullname(value);
            }else if(isStudent){
                currentStudent.setFullname(value);
            }
        }else if(isAge){
            if(isTeacher){
                currentClass.getTeacher().setAge(Integer.parseInt(value));
            }else if(isStudent){
                currentStudent.setAge(Integer.parseInt(value));
            }
        }
    }
    public void display(){
        classList.forEach((aptechClass) -> {
            aptechClass.display();
        });
    }
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package studentxml;

/**
 *
 * @author Administrator
 */
public class Student {
    String fullname, address;
    int age;

    public Student() {
    }

    public Student(String fullname, String address, int age) {
        this.fullname = fullname;
        this.address = address;
        this.age = age;
    }

    public String getFullname() {
        return fullname;
    }

    public void setFullname(String fullname) {
        this.fullname = fullname;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Student{" + "fullname=" + fullname + ", address=" + address + ", age=" + age + '}';
    }
    
    
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package studentxml;

/**
 *
 * @author Administrator
 */
public class Teacher {
    String fullname,address;
    int age;

    public Teacher() {
    }

    public Teacher(String fullname, String address, int age) {
        this.fullname = fullname;
        this.address = address;
        this.age = age;
    }

    public String getFullname() {
        return fullname;
    }

    public void setFullname(String fullname) {
        this.fullname = fullname;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Teacher{" + "fullname=" + fullname + ", address=" + address + ", age=" + age + '}';
    }
    
    
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package studentxml;

import java.io.FileInputStream;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

/**
 *
 * @author Administrator
 */
public class Main {
    public static void main(String[] args) throws Exception  {
        FileInputStream fis = new FileInputStream("aptech_class.xml");
        
        SAXParserFactory factory = SAXParserFactory.newInstance();
        SAXParser saxParser = factory.newSAXParser();
        
        AptechClassHandler aptechClassHandler = new AptechClassHandler();
        
        saxParser.parse(fis, aptechClassHandler);
        
        aptechClassHandler.display();
    }
}

2020-04-15 14:02:13

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package t1907ac;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

/**
 *
 * @author Minh
 */
public class T1907Ac {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws Exception {
        // TODO code application logic here
        FileInputStream fis = new FileInputStream("class.xml");
        
         SAXParserFactory factory = SAXParserFactory.newInstance();
         SAXParser saxParser = factory.newSAXParser();
         
         AptechClassParser apptechClassParser = new AptechClassParser();
         
        saxParser.parse(fis, apptechClassParser);
        
        apptechClassParser.display();
    }
    
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package t1907ac;

import java.util.ArrayList;
import java.util.List;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

/**
 *
 * @author Minh
 */
public class AptechClassParser  extends DefaultHandler{
    List<AptechClass> classList = new ArrayList<>();
    AptechClass currentClass = null;
    Student currentStudent = null;
    
    boolean isClassName = false;
    boolean isAddress = false;
    boolean isTeacher = false;
    boolean isFullname = false;
    boolean isAge = false;
    boolean isStudent = false;
    @Override
    public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
            if(qName.equalsIgnoreCase("Class")){
               currentClass = new AptechClass();   
            }else if(qName.equalsIgnoreCase("classname")){
                isClassName = true;
            }else if(qName.equalsIgnoreCase("address")){
                isAddress = true;
            }else if(qName.equalsIgnoreCase("teacher")){
                isTeacher = true;
                Teacher teacher = new Teacher();
                currentClass.setTeacher(teacher);
            }else if(qName.equalsIgnoreCase("fullname")){
                isFullname = true;
            }else if(qName.equalsIgnoreCase("age")){
                isAge = true;
            }else if(qName.equalsIgnoreCase("student")){
                isStudent = true;
                currentStudent = new Student();
            }
    }

    @Override
    public void endElement(String uri, String localName, String qName) throws SAXException {
               if(qName.equalsIgnoreCase("Class")){
               classList.add(currentClass);
               currentClass = null;
            }else if(qName.equalsIgnoreCase("Classname")){
                isClassName = false;
            }else if(qName.equalsIgnoreCase("Address")){
                isAddress = false;
            }else if(qName.equalsIgnoreCase("teacher")){
                isTeacher = false;
            }else if(qName.equalsIgnoreCase("fullname")){
                isFullname = false;
            }else if(qName.equalsIgnoreCase("age")){
                isAge = false;
            }else if(qName.equalsIgnoreCase("student")){
                isStudent = false;
                currentClass.getStudentList().add(currentStudent);
                currentStudent  = null;
            }
        }

    @Override
    public void characters(char[] ch, int start, int length) throws SAXException {
        String value = new String(ch, start, length);
        if(isClassName){
           currentClass.setClassname(value);
        }else if(isAddress){
            if(isTeacher){
                   currentClass.getTeacher().setAddress(value);
            }else if(isStudent){
                   currentStudent.setAddress(value);
            }else{
                       currentClass.setAddress(value);
            }
        }else if(isFullname){
          if(isTeacher){
            currentClass.getTeacher().setFullname(value);
          }else if(isStudent){
             currentStudent.setFullname(value);
          }
        }else if(isAge){
          if(isTeacher){
            currentClass.getTeacher().setAge(Integer.parseInt(value));
          } else if(isStudent){
             currentStudent.setAge(Integer.parseInt(value));
          }
        }
    }
    public void display() {
        for (AptechClass aptechClass : classList) {
            aptechClass.display();
        }
    }
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package t1907ac;

import java.util.ArrayList;
import java.util.List;

/**
 *
 * @author Minh
 */
public class AptechClass {
    String classname,address;
    Teacher teacher;
    List<Student> studentList = new ArrayList<>();

    public AptechClass() {
    }

    public String getClassname() {
        return classname;
    }

    public void setClassname(String classname) {
        this.classname = classname;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public Teacher getTeacher() {
        return teacher;
    }

    public void setTeacher(Teacher teacher) {
        this.teacher = teacher;
    }

    public List<Student> getStudentList() {
        return studentList;
    }

    public void setStudentList(List<Student> studentList) {
        this.studentList = studentList;
    }
 
   public void display(){
       System.out.format("\nClass name: %s, Address: %s", classname,address);
       System.out.println("Teacher's detail infornation: ");
       System.out.println(teacher);
       System.out.println("Student List: ");
       for (Student student : studentList) {
           System.out.println(student);
       }
   }
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package t1907ac;

/**
 *
 * @author Minh
 */
public class Teacher {
    String fullname , address;
    int age;

    public Teacher() {
    }

    public Teacher(String fullname, String address, int age) {
        this.fullname = fullname;
        this.address = address;
        this.age = age;
    }

    public String getFullname() {
        return fullname;
    }

    public void setFullname(String fullname) {
        this.fullname = fullname;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Teacher{" + "fullname=" + fullname + ", address=" + address + ", age=" + age + '}';
    }
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package t1907ac;

/**
 *
 * @author Minh
 */
public class Student {
    String fullname, address;
    int age;
    public Student() {
    }

    public Student(String fullname, String address, int age) {
        this.fullname = fullname;
        this.address = address;
        this .age = age;
    }

    public String getFullname() {
        return fullname;
    }

    public void setFullname(String fullname) {
        this.fullname = fullname;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Student{" + "fullname=" + fullname + ", address=" + address + ", age=" + age + '}';
    }
    
    
}

2020-04-15 12:55:36

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package lesson1;

import java.io.FileInputStream;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

/**
 *
 * @author Admin
 */
public class Main {
   public static void main(String[] args) throws Exception {
        //doc noi dung tu file Aptech_class.xml.
        FileInputStream fis = new FileInputStream("Aptech_class.xml");
        // SAXParser thông báo cho các trình khách cấu trúc của tài liệu XML bằng cách gọi các hàm callbacks => hoạt động nhanh , ít tốn bộ nhớ
        SAXParserFactory factory = SAXParserFactory.newInstance();
	SAXParser saxParser = factory.newSAXParser();
        
        AptechClassHandler aptechClassHandler = new AptechClassHandler();
        
        saxParser.parse(fis, aptechClassHandler);
        //hiển thị
        aptechClassHandler.display();
    }
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package lesson1;

import java.util.ArrayList;
import java.util.List;

/**
 *
 * @author Admin
 */
public class AptechClass {
    String classname,address;
    Teacher teacher;
    List<Student> studentList = new ArrayList<>();

    public AptechClass() {
    }

    public String getClassname() {
        return classname;
    }

    public void setClassname(String classname) {
        this.classname = classname;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public Teacher getTeacher() {
        return teacher;
    }

    public void setTeacher(Teacher teacher) {
        this.teacher = teacher;
    }

    public List<Student> getStudentList() {
        return studentList;
    }

    public void setStudentList(List<Student> studentList) {
        this.studentList = studentList;
    }
    
    public void display(){
        System.out.format("\n Class Name: %s,Address: %s",classname,address);
        System.out.println("\n Teacher's detail information: ");
        System.out.println(teacher);
       System.out.println("Student List: ");
        for (Student student : studentList) {
            System.out.println(student);
        }
    }
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package lesson1;

/**
 *
 * @author Admin
 */
public class Teacher {
    String fullname, address;
    int age;

    public Teacher() {
    }

    public Teacher(String fullname, String address, int age) {
        this.fullname = fullname;
        this.address = address;
        this.age = age;
    }

    public String getFullname() {
        return fullname;
    }

    public void setFullname(String fullname) {
        this.fullname = fullname;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Teacher{" + "fullname=" + fullname + ", address=" + address + ", age=" + age + '}';
    }
    
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package lesson1;

/**
 *
 * @author Admin
 */
public class Student {
    String fullname,address;
    int age;

    public Student() {
    }

    public Student(String fullname, String address, int age) {
        this.fullname = fullname;
        this.address = address;
        this.age = age;
    }

    public String getFullname() {
        return fullname;
    }

    public void setFullname(String fullname) {
        this.fullname = fullname;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Student{" + "fullname=" + fullname + ", address=" + address + ", age=" + age + '}';
    }
    
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package lesson1;

import java.util.ArrayList;
import java.util.List;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

/**
 *
 * @author Admin
 */
public class AptechClassHandler extends DefaultHandler {
    List<AptechClass> classList = new ArrayList<>();
    AptechClass currentClass = null;
    Student currentStudent = null;
    
    boolean isClassName = false;
    boolean isAddress = false;
    boolean isTeacher = false;
    boolean isFullname = false;
    boolean isAge = false;
    boolean isStudent = false;
    
    @Override
    public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
        if(qName.equalsIgnoreCase("class")) {
            currentClass = new AptechClass();
        } else if(qName.equalsIgnoreCase("classname")) {
            isClassName = true;
        } else if(qName.equalsIgnoreCase("address")) {
            isAddress = true;
        } else if(qName.equalsIgnoreCase("teacher")) {
            isTeacher = true;
            Teacher teacher = new Teacher();
            currentClass.setTeacher(teacher);
        } else if(qName.equalsIgnoreCase("fullname")) {
            isFullname = true;
        } else if(qName.equalsIgnoreCase("age")) {
            isAge = true;
        } else if(qName.equalsIgnoreCase("student")) {
            isStudent = true;
            currentStudent = new Student();
        }
    }

    @Override
    public void endElement(String uri, String localName, String qName) throws SAXException {
        if(qName.equalsIgnoreCase("class")) {
            classList.add(currentClass);
            currentClass = null;
        } else if(qName.equalsIgnoreCase("classname")) {
            isClassName = false;
        } else if(qName.equalsIgnoreCase("address")) {
            isAddress = false;
        } else if(qName.equalsIgnoreCase("teacher")) {
            isTeacher = false;
        } else if(qName.equalsIgnoreCase("fullname")) {
            isFullname = false;
        } else if(qName.equalsIgnoreCase("age")) {
            isAge = false;
        } else if(qName.equalsIgnoreCase("student")) {
            isStudent = false;
            currentClass.getStudentList().add(currentStudent);
            currentStudent = null;
        }
    }

    @Override
    public void characters(char[] ch, int start, int length) throws SAXException {
        String value = new String(ch, start, length);
        
        if(isClassName) {
            currentClass.setClassname(value);
        } else if(isAddress) {
            if(isTeacher) {
                currentClass.getTeacher().setAddress(value);
            } else if(isStudent) {
                currentStudent.setAddress(value);
            } else {
                currentClass.setAddress(value);
            }
        } else if(isFullname) {
            if(isTeacher) {
                currentClass.getTeacher().setFullname(value);
            } else if(isStudent) {
                currentStudent.setFullname(value);
            }
        } else if(isAge) {
            if(isTeacher) {
                currentClass.getTeacher().setAge(Integer.parseInt(value));
            } else if(isStudent) {
                currentStudent.setAge(Integer.parseInt(value));
            }
        }
    }
    
    public void display() {
        for (AptechClass aptechClass : classList) {
            aptechClass.display();
        }
    }
    
}

2020-04-15 10:08:44

<?xml version="1.0" encoding="UTF-8"?>

<class_list title="sdsd" abc="sasd">
	<class>
		<classname>T1907A</classname>
		<address>8 Ton That Thuyet, Cau Giay, HN</address>
		<teacher>
			<fullname>Phan Bach Tung Duong</fullname>
			<age>18</age>
			<address>Ha Noi</address>
		</teacher>
		<student_list>
			<student>
				<fullname>Phan Bach Tung A</fullname>
				<age>19</age>
				<address>Ha Noi</address>
			</student>
			<student>
				<fullname>Phan Bach Tung B</fullname>
				<age>21</age>
				<address>Ha Noi</address>
			</student>
			<student>
				<fullname>Phan Bach Tung C</fullname>
				<age>22</age>
				<address>Ha Noi</address>
			</student>
		</student_list>
	</class>
	<class>
		<classname>T1908K</classname>
		<address>8 Ton That Thuyet, Cau Giay, HN</address>
		<teacher>
			<fullname>Phan Bach Tung G</fullname>
			<age>18</age>
			<address>Ha Noi</address>
		</teacher>
		<student_list>
			<student>
				<fullname>Phan Bach Tung H</fullname>
				<age>19</age>
				<address>Ha Noi</address>
			</student>
			<student>
				<fullname>Phan Bach Tung S</fullname>
				<age>20</age>
				<address>Ha Noi</address>
			</student>
			<student>
				<fullname>Phan Bach Tung N</fullname>
				<age>21</age>
				<address>Ha Noi</address>
			</student>
		</student_list>
	</class>
</class_list>