计算

public class Calculate {int add(int num1,int num2){return num1+num2;}int sub(int num1,int num2){if(num1>num2)return num1-num2;else return num2-num1;}int multiply(int num1,int num2){return num1*num2;}int divide(int num1,int num2){return num1/num2;}}import java.util.Scanner;public class Test {public static void main(String[] args) {int a,b,c,d;int num1,num2;Calculate p1=new Calculate();Scanner reader = new Scanner(System.in);num1=reader.nextInt();num2=reader.nextInt();a=p1.add(num1, num2);b=p1.divide(num1, num2);c=p1.sub(num1,num2);d=p1.multiply(num1, num2);System.out.println("the result of add is:"+a);System.out.println("the result of divide is:"+b);System.out.println("the result of sub is:"+c);System.out.println("the result of multiply is:"+d);}}