Java 构造器（构造方法）练习

 1 package com.bytezero.triangle;
 2
 3 public class TriAngle
 4 {
 5     //私有属性
 6     private double base; //边长
 7     private double height;  //高
 8
 9     //构造器
10     public TriAngle()
11     {
12
13     }
14
15     public TriAngle(double b,double h)
16     {
17         base = b;
18         height = h;
19     }
20
21     //方法
22     public void setBase(double b)
23     {
24         base = b;
25     }
26
27     public double getBase()
28     {
29         return base;
30     }
31
32     public void setHeight(double h)
33     {
34         height = h;
35     }
36     public double getHeight()
37     {
38         return height;
39     }
40
41
42
43 }

 1 package com.bytezero.triangle;
 2
 3 public class TriAngleTest
 4 {
 5     public static void main(String[] args)
 6     {
 7         TriAngle t1 = new TriAngle();
 8         t1.setBase(2.2);
 9         t1.setHeight(3.3);
10         System.out.println("base :"+t1.getBase()+",  height："+t1.getHeight());
11
12
13         TriAngle t2 = new TriAngle(6.6,7.7);
14         System.out.println("base :"+t2.getBase()+",  height："+t2.getHeight());
15
16
17
18     }
19 }