Java Basic- OOP - Tổng hợp - Quản lý sinh viên - giáo viên bằng java

#Teacher.java

/*
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 * and open the template in the editor.
 */
package bt989;

import java.util.Scanner;

/**
 *
 * @author Diep.Tran
 */
public class Teacher extends Person{
    String className;
    int salary;
    float totalHours;

    @Override
    public void inputInfo() {
        super.inputInfo();
        
        Scanner scan = new Scanner(System.in);
        
        System.out.println("Nhap lop hoc: ");
        className = scan.nextLine();
        System.out.println("Nhap luong: ");
        salary = Integer.parseInt(scan.nextLine());
        System.out.println("Nhap tong gio day: ");
        totalHours = Float.parseFloat(scan.nextLine());
    }
    
    public float getSalary() {
        if(className.contains("M") || 
                className.contains("L") || 
                className.contains("m") || 
                className.contains("l")) {
            return salary * totalHours + 200000;
        }
        return salary * totalHours;
    }

    @Override
    public String toString() {
        return super.toString() + ", className=" + className + ", salary=" + salary + ", totalHours=" + totalHours;
    }
    
    
}

#Person.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 bt989;

import java.util.Scanner;

/**
 *
 * @author Diep.Tran
 */
public class Person {
    String fullname, gender, address, birthday;

    public Person() {
    }
    
    public void inputInfo() {
        Scanner scan = new Scanner(System.in);
        
        System.out.println("Nhap ten: ");
        fullname = scan.nextLine();
        System.out.println("Nhap gioi tinh: ");
        gender = scan.nextLine();
        System.out.println("Nhap dia chi: ");
        address = scan.nextLine();
        System.out.println("Nhap ngay sinh: ");
        birthday = scan.nextLine();
    }

    public void displayInfo() {
        System.out.println(this);
    }
    
    @Override
    public String toString() {
        return "fullname=" + fullname + ", gender=" + gender + ", address=" + address + ", birthday=" + birthday;
    }

    public String getFullname() {
        return fullname;
    }

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

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public String getAddress() {
        return address;
    }

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

    public String getBirthday() {
        return birthday;
    }

    public void setBirthday(String birthday) {
        this.birthday = birthday;
    }
    
    
}

#Main.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 bt989;

/**
 *
 * @author Diep.Tran
 */
public class Main {
    public static void main(String[] args) {
        Teacher t = new Teacher();
        t.inputInfo();
        
        t.displayInfo();
        
        System.out.println("Luong: " + t.getSalary());
    }
}