1 public class Triangle{
2 double s;
3 public Triangle(double a,double b){
4 this.s=0.5*a*b;
5 System.out.println("fuleis;"+s);
6 }
7 public double gets(){
8 return s;
9 }
10 }
11
12
13 class Test{
14 public static void main(String args[]){
15 sanjiaozhuiti ttt=new sanjiaozhuiti(5.0,8.0,5.0);
16 ttt.vt();
17 ttt.getv();
18 }
19 }
20
21 class sanlenzhuti extends Triangle{
22 double h;
23 double v;
24 sanlenzhuti(double a,double b,double h){
25 super(a,b);
26 this.h=h;
27 }
28 void vt(){
29 this.v=gets()*h;
30 System.out.println("v:"+v);
31 }
32 public void getv(){
33 System.out.println("sanlenzhuiti:"+0.33*v);
34 }
35 }
36
37 public class sanjiaozhuiti extends sanlenzhuti{
38 sanjiaozhuiti(double a,double b,double h){
39 super(a,b,h);
40 }
41
42 }
