1 package com.hanqi.z1p1; 2 3 public class Lader { 4 5 double Shang; 6 double Xia; 7 double Height; 8 double Slader; 9 10 Lader(double sh,double xi,double gao) 11 { 12 Shang=sh; 13 Xia=xi; 14 Height=gao; 15 Slader=(Shang+Xia)*Height/2; 16 System.out.println("梯形的面积是："+Slader); 17 } 18 19 20 }
1 package com.hanqi.z1p1; 2 3 public class Circle { 4 5 double r; 6 double l; 7 double Scircle; 8 final double PAI=3.14; 9 10 Circle(double banjing) 11 { 12 r=banjing; 13 l=2*PAI*r; 14 Scircle=PAI*r*r; 15 System.out.println("圆形的周长是："+l+"，圆形的面积是："+Scircle); 16 } 17 18 19 }
1 package com.hanqi.z1p1; 2 3 public class Homework0516 { 4 5 public static void main(String[] args) { 6 // TODO 自动生成的方法存根 7 8 9 //测试类Lader和类Circle的功能。 10 11 Lader tixing=new Lader(5.0,8.0,6.0); 12 13 Circle yuan=new Circle(3.0); 14
运行结果：
