2021-07-15 14:21:11

*calculator.java

import java.util.Scanner;

/*
 * 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.
 */

/**
 *
 * @author Administrator
 */
public class calculator {
    double a, b;

    public calculator() {
    }

    public double getA() {
        return a;
    }

    public void setA(double a) {
        this.a = a;
    }

    public double getB() {
        return b;
    }

    public void setB(double b) {
        this.b = b;
    }
    
    public void input(){
        Scanner input = new Scanner(System.in);
        
        System.out.println("Nhập a: ");
        a = input.nextDouble();
        System.out.println("Nhập b: ");
        b = input.nextDouble();
    }
    public void display(){
        System.out.println("Phép tính cộng: " + (a + b));
        System.out.println("Phép tính trừ : " + (a - b));
        System.out.println("Phép tính nhân: " + (a * b));
        System.out.println("Phép tính chia: " + (a / b));
    }
}
*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.
 */

/**
 *
 * @author Administrator
 */
public class main {
    public static void main(String[] args) {
        calculator cal = new calculator();
        
        cal.input();
        cal.display();
    }
}

2021-07-14 02:43:32

#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 lesson05.bt986;

import java.util.Scanner;

/**
 *
 * @author Diep.Tran
 */
public class Main {

    public static void main(String[] args) {
        Calculator cal = new Calculator();

        Scanner scan = new Scanner(System.in);
        int choose;

//        System.out.println("Tong: " + cal.cong(x, y));
//        System.out.println("Hieu: " + cal.tru(x, y));
//        System.out.println("Tich: " + cal.nhan(x, y));
//        System.out.println("Thuong: " + cal.chia(x, y));
        do {
            showMenu();
            choose = scan.nextInt();
            if(choose == 5) break;

            System.out.println("Nhap x: ");
            int x = scan.nextInt();

            System.out.println("Nhap y: ");
            int y = scan.nextInt();

            switch (choose) {
                case 1:
                    System.out.println("Tong: " + cal.cong(x, y));
                    break;
                case 2:
                    System.out.println("Hieu: " + cal.tru(x, y));
                    break;
                case 3:
                    System.out.println("Tich: " + cal.nhan(x, y));
                    break;
                case 4:
                    System.out.println("Thuong: " + cal.chia(x, y));
                    break;
//                case 5:
//                    System.out.println("Thoat!!!");
//                    break;
                default:
                    System.out.println("Nhap lai!!!");
                    break;
            }
        } while (choose != 5);
    }

    static void showMenu() {
        System.out.println("1. Cong");
        System.out.println("2. Tru");
        System.out.println("3. Nhan");
        System.out.println("4. Chia");
        System.out.println("5. Thoat");
        System.out.println("Chon: ");
    }
}

#Calculator.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 lesson05.bt986;

/**
 *
 * @author Diep.Tran
 */
public class Calculator {
    public float cong(float x, float y) {
        return x + y;
    }
    public float tru(float x, float y) {
        return x - y;
    }
    public float nhan(float x, float y) {
        return x * y;
    }
    public float chia(float x, float y) {
        if(y == 0) {
            System.out.println("Yeu cau y khac 0!!!");
            return 0;
        }
        return x / y;
    }
}

2021-07-14 02:37:47

#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 lesson05.bt986;

import java.util.Scanner;

/**
 *
 * @author Diep.Tran
 */
public class Main {
    public static void main(String[] args) {
        Calculator cal = new Calculator();
        
        Scanner scan = new Scanner(System.in);
        
        System.out.println("Nhap x: ");
        int x = scan.nextInt();
        
        System.out.println("Nhap y: ");
        int y = scan.nextInt();
        
        System.out.println("Tong: " + cal.cong(x, y));
        System.out.println("Hieu: " + cal.tru(x, y));
        System.out.println("Tich: " + cal.nhan(x, y));
        System.out.println("Thuongw: " + cal.chia(x, y));
    }
}

#Calculator.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 lesson05.bt986;

/**
 *
 * @author Diep.Tran
 */
public class Calculator {
    public float cong(float x, float y) {
        return x + y;
    }
    public float tru(float x, float y) {
        return x - y;
    }
    public float nhan(float x, float y) {
        return x * y;
    }
    public float chia(float x, float y) {
        if(y == 0) {
            System.out.println("Yeu cau y khac 0!!!");
            return 0;
        }
        return x / y;
    }
}

2021-03-02 14:18:47

/*
 * 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 bai986;

/**
 *
 * @author MTLS
 */
public class Calculator {
    float a, b;
    public Calculator(float a1, float b1) {
        a=a1;
        b=b1;
    }

    Calculator() {
       
    }
    
    public float cong() {
        return a + b;
    }
    
    public float tru() {
        return a-b;
    }
    
    public float nhan() {
        return a*b;
    }
    
    public float chia() {
        return a/b;
    }
}

2021-03-02 14:18:27

/*
 * 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 bai986;

import java.util.Scanner;

/**
 *
 * @author MTLS
 */

public class Main {
    public static void main(String[] args) {
       Scanner scan = new Scanner(System.in);
       Calculator cal1 = new Calculator();
       float a, b;
       System.out.println("Nhap a = ");
       cal1.a = scan.nextFloat();
       
       System.out.println("Nhap b = ");
       cal1.b = scan.nextFloat();
       
       System.out.println("tong = " + cal1.cong() );
       System.out.println("hieu = " + cal1.tru() );
       System.out.println("tich = " + cal1.nhan() );
       System.out.println("thuong = " + cal1.chia() );
       
    }
}

2021-01-25 15:21:25

/*
 * 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 calculator;

/**
 *
 * @author UserName
 */
public class Pheptinh {

    public static void main(String[] args) {
        Caculator tinh = new Caculator();
        tinh.nhap();
        tinh.tong();
        tinh.tich();
        tinh.hieu();
        tinh.thuong();
    }

}


/*
 * 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 calculator;

import java.util.Scanner;

/**
 *
 * @author UserName
 */
public class Caculator {

    public int a;
    public int b;

    public Caculator() {

    }

    public void nhap() {
        Scanner scan = new Scanner(System.in);
        System.out.println("Nhap so thu nhat: ");
        a = scan.nextInt();
        System.out.println("Nhap so thu hai: ");
        b = scan.nextInt();
    }

    public void tong() {
        int c = a + b;
        System.out.println("Tong 2 so = " + c);
    }

    public void tich() {
        int c = a * b;
        System.out.println("Tich 2 so = " + c);
    }

    public void thuong() {
        int c = a / b;
        System.out.println("a/b = " + c);
    }

    public void hieu() {
        int c = a - b;
        System.out.println("Hieu 2 so = " + c);
    }

}

2021-01-25 14:04:03

/*
 * 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 buoi.pkg2;

import java.util.Scanner;

/**
 *
 * @author Admin
 */
public class Pheptinh {

    public Float a, b;
int lua_chon;
    public Pheptinh(float a1, float b1) {
        a = a1;
        b = b1;
    }

    Pheptinh() {

    }

    public void menu() {
        
        System.out.print("Lua chon phep toan : ");
        System.out.println("");
        System.out.print(" 1 Phep cong");
        System.out.println("");
        System.out.print(" 2 Phep Tru");
        System.out.println("");
        System.out.print(" 3 Phep Nhan");
        System.out.println("");
        System.out.print(" 4 Phep Chia");
        System.out.println("");
        System.out.print(" Chon phep toan : ");
        Scanner scan = new Scanner(System.in);
        lua_chon = scan.nextInt();
    }

    public void cong() {
        float c = a + b;
        System.out.println();
        System.out.println("Ket qua = "+c);
        System.out.println();
    }
    public void tru() {
        float c = a - b;
        System.out.println();
        System.out.println("Ket qua = "+c);
        System.out.println();
    }
    public void nhan() {
        float c = a * b;
        System.out.println();
        System.out.println("Ket qua = "+c);
        System.out.println();
    }
    public void chia() {
        float c = a / b;
        System.out.println();
        System.out.println("Ket qua = "+c);
        System.out.println();
    }
}

2021-01-25 14:01:54

/*
 * 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 buoi.pkg2;

import java.util.Scanner;

/**
 *
 * @author Admin
 */
public class Bai1 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        float a, b;

        Scanner scan = new Scanner(System.in);
        System.out.print("nhap so a ");
        a = scan.nextFloat();
        System.out.print("nhap so b ");
        b = scan.nextFloat();
        Pheptinh pheptinh = new Pheptinh();
        pheptinh.a = a;
        pheptinh.b = b;

        do {
            pheptinh.menu();
            switch (pheptinh.lua_chon) {
                case 0:
                    System.out.println();
                    System.out.println("Nhap lai");
                    System.out.println();
                    break;
                case 1:
                    pheptinh.cong();
                    break;
                case 2:
                    pheptinh.tru();
                    break;
                case 3:
                    pheptinh.nhan();
                    break;
                case 4:
                    pheptinh.chia();
                    break;
            }
        } while (pheptinh.lua_chon != 5 && pheptinh.lua_chon < 5);

    }
}

2021-01-25 10:01:19

package javalesson3.calculator;

import java.util.Scanner;

public class Calculator {
    
    public int a, b;
    
    public Calculator(int a, int b) {
        
        this.a = a;
        this.b = b;
        
    }
    
    public Calculator() {
    
    
    }
        
    
    public int sum() {
        
        return a + b;
        
    }
    
    public int substract() {
        
        return a - b;
        
    }
    
    public int multiply() {
        
        return a * b;
        
    }
    
    public float div() {
        
        return (float)((float)a / (float)b);
        
    }
    
}

package javalesson3.calculator;

import java.util.Scanner;

public class Test {

    public static void main(String[] args) {
        
        Scanner r = new Scanner(System.in);
        
        Calculator cal1 = new Calculator();
        
        cal1.a = r.nextInt();
        cal1.b = r.nextInt();
        
        System.out.println("Sum = " + cal1.sum());
        System.out.println("Subtraction = " + cal1.substract());
        System.out.println("Multiplication = " + cal1.multiply());
        System.out.println("Division = " + cal1.div());

    }

}

2021-01-25 09:10:38

/*
 * 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 t2008a;

/**
 *
 * @author dong
 */
public class calculator {
     public float x,y;
     public calculator(float x1, float y1){
         x = x1;
         y = y1;
     }
     public float cong(){
             return x + y;
                     };
     public float tru(){
             return x + y;
                     }
     public float nhan(){
             return x * y;
                     };
      public float chia(){
             return x / y;
                     }
      public static void main(String[] args) {
         calculator c1 = new calculator(1,2);
         float c2 = c1.cong();
         System.out.println("Tong 1 + 2 ="+ c2);
         
         calculator c3 = new calculator(1,2);
         float c4 = c3.tru();
         System.out.println("tru 1 - 2 ="+ c4);
         
         calculator c5 = new calculator(1,2);
         float c6 = c5.nhan();
         System.out.println("nhan 1 * 2 ="+ c6);
         
         calculator c7 = new calculator(1,2);
         float c8 = c7.chia();
         System.out.println("chia 1 / 2 ="+ c8);
                
    }
}