计算器类2

package helloworld;
import java.util.*;
public class CalculatorTest {
 public static void main(String[]args){
  Scanner scan=new Scanner(System.in);
  Calculator result=new Calculator();
  System.out.println("请输入a,b的值");
  int a=scan.nextInt();
  int b=scan.nextInt();
  System.out.println("加法结果为"+result.sum(a, b));
  System.out.println("减法结果为"+result.sub(a, b));
  System.out.println("乘法结果为"+result.mult(a, b));
  System.out.println("除法结果为"+result.div(a, b));
 }

}