[20-05-02][Self-test 34]Java Arithmetic

 1 package test_7_4;
 2 
 3 public class Arithmetic {
 4 
 5     /**
 6      * 自定义四则运算
 7      */
 8     
 9     private double x;
10     private double y;
11     
12     public Arithmetic(double x, double y) {
13         
14         this.x = x;
15         this.y = y;
16     }
17     
18     public void plus() {
19         
20         System.out.println(this.x + " + " + this.y + " = " + (this.x + this.y));
21     }
22     
23     public void subtract() {
24         
25         System.out.println(this.x + " - " + this.y + " = " + (this.x - this.y));
26     }
27     
28     public void multipy() {
29         
30         System.out.println(this.x + " * " + this.y + " = " + (this.x * this.y));
31     }
32     
33     public void divide() {
34         
35         System.out.println(this.x + " / " + this.y + " = " + (this.x / this.y));
36     }
37     
38 }

 1 package test_7_4;
 2 
 3 public class Test {
 4 
 5     public static void main(String[] args) {
 6         
 7         Arithmetic arithmetic = new Arithmetic(10, 4);
 8         
 9         arithmetic.plus();
10         arithmetic.subtract();
11         arithmetic.multipy();
12         arithmetic.divide();
13 
14     }
15 
16 }