Bài tập luyện thi Java2

Tóm tắt nội dung:
	- Kiến thức OOP -> Bắt buộc
	- Collections
		- ArrayList
		- HashMap
		- List
	- Exception
	- Nhập dữ liệu -> Ko dùng Scanner
	- File
		- FileInputStream / FileOutputStream
		- ObjectInputStream / ObjectOutputStream -> Serialization
		- FileReader / FileWriter (BufferedReader / BufferedWriter)
	- Thread
		- Sync 2 Thread
	- CSDL
		- CRUD
		- Java Swing
	- Lambda -> Code bình thường -> Click warning -> Generate
	- Đa ngôn ngữ
=========================================================================================

#Opportunity.java

/*
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package com.gokisoft.bt3192;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author teacher
 */
public class Opportunity implements Serializable{

    String id;
    String jobTitle;
    float expectedSalary;
    List<String> skills;
    List<String> education;

    public Opportunity() {
        skills = new ArrayList<>();
        education = new ArrayList<>();
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getJobTitle() {
        return jobTitle;
    }

    public void setJobTitle(String jobTitle) {
        this.jobTitle = jobTitle;
    }

    public float getExpectedSalary() {
        return expectedSalary;
    }

    public void setExpectedSalary(float expectedSalary) {
        this.expectedSalary = expectedSalary;
    }

    public List<String> getSkills() {
        return skills;
    }

    public void setSkills(List<String> skills) {
        this.skills = skills;
    }

    public List<String> getEducation() {
        return education;
    }

    public void setEducation(List<String> education) {
        this.education = education;
    }

    @Override
    public String toString() {
        return "id=" + id + ", jobTitle=" + jobTitle + ", expectedSalary=" + expectedSalary;
    }

    public void input() {
        try {
            InputStreamReader reader = new InputStreamReader(System.in);
            BufferedReader bufferedReader = new BufferedReader(reader);

            System.out.println("Nhap ID: ");
            id = bufferedReader.readLine();

            do {
                System.out.println("Nhap tieu de cong viec: ");
                jobTitle = bufferedReader.readLine();
            } while (jobTitle.length() < 10);

            do {
                System.out.println("Nhap muc luong mong muon: ");
                expectedSalary = Integer.parseInt(bufferedReader.readLine());
            } while (expectedSalary <= 20);

            int n;
            do {
                System.out.println("Nhap so ky nang: ");
                n = Integer.parseInt(bufferedReader.readLine());
            } while (n < 2);
            for (int i = 0; i < n; i++) {
                System.out.println("Nhap ky nang: ");
                String skill = bufferedReader.readLine();
                skills.add(skill);
            }
            
            do {
                System.out.println("Nhap so truong: ");
                n = Integer.parseInt(bufferedReader.readLine());
            } while (n < 1);
            for (int i = 0; i < n; i++) {
                System.out.println("Nhap truong: ");
                String edu = bufferedReader.readLine();
                education.add(edu);
            }
        } catch (IOException ex) {
            Logger.getLogger(Opportunity.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
    
    public void display() {
        System.out.println(toString());
        
        System.out.println("Danh sach ky nang: ");
        for (String skill : skills) {
            System.out.println(skill);
        }
        
        System.out.println("Danh sach truong: ");
        for (String edu : education) {
            System.out.println(edu);
        }
    }
}

#Test.java

/*
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package com.gokisoft.bt3192;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author teacher
 */
public class Test {
    static List<Opportunity> dataList;
    
    public static void main(String[] args) {
        dataList = new ArrayList<>();
        
//        for (int i = 0; i < 5; i++) {
//            Opportunity op = new Opportunity();
//            op.input();
//            
//            dataList.add(op);
//        }
//        
//        saveFile();

        readFile();
        
        System.out.println("Danh sach cong viec: ");
        for (Opportunity op : dataList) {
            op.display();
        }
        
        search();
    }
    
    static void search() {
        try {
            InputStreamReader reader = new InputStreamReader(System.in);
            BufferedReader bufferedReader = new BufferedReader(reader);
            
            System.out.println("Nhap tieu de cong viec can tim: ");
            String jobTitle = bufferedReader.readLine();
            
            boolean isFind = false;
            for (Opportunity op : dataList) {
                if(op.getJobTitle().equalsIgnoreCase(jobTitle)) {
                    if(!isFind) {
                        System.out.println("Danh sach cong viec tim thay: ");
                    }
                    op.display();
                    isFind = true;
                }
            }
            
            if(!isFind) {
                System.out.println("NOT FOUND");
            }
        } catch (IOException ex) {
            Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
    
    static void readFile() {
        FileInputStream fis = null;
        ObjectInputStream ois = null;
        
        try {
            fis = new FileInputStream("data_file.dat");
            ois = new ObjectInputStream(fis);
            
            dataList = (List<Opportunity>) ois.readObject();
        } catch (FileNotFoundException ex) {
            Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);
        } catch (ClassNotFoundException ex) {
            Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);
        } finally {
            if(ois != null) {
                try {
                    ois.close();
                } catch (IOException ex) {
                    Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
            
            if(fis != null) {
                try {
                    fis.close();
                } catch (IOException ex) {
                    Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        }
    }
    
    static void saveFile() {
        FileOutputStream fos = null;
        ObjectOutputStream oos = null;
        
        try {
            fos = new FileOutputStream("data_file.dat");
            oos = new ObjectOutputStream(fos);
            
            oos.writeObject(dataList);
        } catch (FileNotFoundException ex) {
            Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);
        } finally {
            if(oos != null) {
                try {
                    oos.close();
                } catch (IOException ex) {
                    Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
            
            if(fos != null) {
                try {
                    fos.close();
                } catch (IOException ex) {
                    Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        }
    }
}

Thread

#Main.java

/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package com.gokisoft.bt3192;

/**
 *
 * @author teacher
 */
public class Main {
    public static void main(String[] args) {
        SharedData sharedData = new SharedData();
        
        Thread1 t1 = new Thread1(sharedData);
        Thread2 t2 = new Thread2(sharedData);
        
        t1.start();
        t2.start();
    }
}

#SharedData.java

/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
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package com.gokisoft.bt3192;

import java.util.HashMap;
import java.util.Map;
import java.util.Random;
import java.util.Set;

/**
 *
 * @author teacher
 */
public class SharedData {
    Map<String, String> dataMap;
    String language;

    public SharedData() {
        dataMap = new HashMap<>();
        dataMap.put("Monday", "Thu 2");
        dataMap.put("Tuesday", "Thu 3");
        dataMap.put("Wednesday", "Thu 4");
        dataMap.put("Thursday", "Thu 5");
        dataMap.put("Friday", "Thu 6");
        dataMap.put("Saturday", "Thu 7");
        dataMap.put("Sunday", "Chu Nhat");
    }
    
    public String getEnglishDay() {
        Random random = new Random();
        int rad = random.nextInt(6);
        
        Set<String> sets = dataMap.keySet();
        language = (String) sets.toArray()[rad];
        
        return language;
    }
    
    public String getVietnameseDay() {
        return dataMap.get(language);
    }
}

#Thread1.java

/*
 * 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 com.gokisoft.bt3192;

import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author teacher
 */
public class Thread1 extends Thread{
    SharedData sharedData;

    public Thread1(SharedData sharedData) {
        this.sharedData = sharedData;
    }

    @Override
    public void run() {
        try {
            Thread.sleep(100);
        } catch (InterruptedException ex) {
            Logger.getLogger(Thread1.class.getName()).log(Level.SEVERE, null, ex);
        }
        
        synchronized(sharedData) {
            //for (int i = 0; i < 10; i++) {
            for (;;) {
                String en = sharedData.getEnglishDay();
                System.out.println("T1 > " + en);
                
                sharedData.notifyAll();
                try {
                    sharedData.wait();
                } catch (InterruptedException ex) {
                    Logger.getLogger(Thread1.class.getName()).log(Level.SEVERE, null, ex);
                }
                
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException ex) {
                    Logger.getLogger(Thread1.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        }
        
//        System.out.println("T1 stop");
//        synchronized(sharedData) {
//            sharedData.notifyAll();
//        }
    }
}

#Thread2.java

/*
 * 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 com.gokisoft.bt3192;

import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author teacher
 */
public class Thread2 extends Thread {

    SharedData sharedData;

    public Thread2(SharedData sharedData) {
        this.sharedData = sharedData;
    }

    @Override
    public void run() {
        synchronized (sharedData) {
            //for (int i = 0; i < 10; i++) {
            for (;;) {
                sharedData.notifyAll();
                try {
                    sharedData.wait();
                } catch (InterruptedException ex) {
                    Logger.getLogger(Thread2.class.getName()).log(Level.SEVERE, null, ex);
                }
                
                String vn = sharedData.getVietnameseDay();
                System.out.println("T2 > " + vn);
            }
        }
        
//        System.out.println("T2 stop");
//        synchronized(sharedData) {
//            sharedData.notifyAll();
//        }
    }
}