面向对象—封装—三角形

 1  //创建一个三角形类，成员变量三边，方法求周长，创建类主类A来测试它。
 2     private int bian1;
 3     private int bian2;
 4     private int bian3;
 5     private int C;
 6
 7
 8     public int getC() {
 9         return C;
10     }
11     public int getBian1() {
12         return bian1;
13     }
14     public void setBian1(int bian1) {
15         this.bian1 = bian1;
16     }
17     public int getBian2() {
18         return bian2;
19     }
20     public void setBian2(int bian2) {
21         this.bian2 = bian2;
22     }
23     public int getBian3() {
24         return bian3;
25     }
26     public void setBian3(int bian3) {
27         this.bian3 = bian3;
28     }
29
30
31     public sanjiaoxing(int bian1, int bian2, int bian3) {
32         super();
33         this.bian1 = bian1;
34         this.bian2 = bian2;
35         this.bian3 = bian3;
36
37     }
38     public int qiuC()
39     {
40         if(bian1+bian2>bian3
41                 &&bian1+bian3>bian2
42                 &&bian2+bian3>bian1)
43         {
44             C=this.bian1+this.bian2+this.bian3;
45             System.out.println("三角形的周长为："+C);
46         }
47         return C;
48     }
49     public static void main(String[] args) {
50         // TODO 自动生成的方法存根
51         sanjiaoxing sanjiao=new sanjiaoxing(2,3,4);
52         sanjiao.qiuC();
53         System.out.println("三角形的周长为："+sanjiao.qiuC());
54     }