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  • 使用lader类创建两个对象

    class Lader{
    double above,bottom,height;
    Lader(){}
    Lader(double a,double b,double h){
     above=a;
     bottom=b;
     height=h;
     }
     public void setAbove(double a){
      above=a;
     }
      public void setBottom(double b){
       bottom=b;
       }
       public void setHeight(double h){
        height=h;
        }
        double computerArea(){
         return(above+bottom)*height/2.0;
         }
        }
        public class Example4_1{
         public static void main(String args[]){
          double area1=0,area2=0;
          Lader laderOne,laderTwo;
          laderOne=new Lader();
          laderTwo=new Lader(10,88,20);
          laderOne.setAbove(16);
          laderOne.setBottom(26);
          laderOne.setHeight(100);
          laderTwo.setAbove(300);
          laderTwo.setBottom(500);
          area1=laderOne.computerArea();
          area2=laderTwo.computerArea();
          System.out.println("laderOne above,bottomandheight:"+laderOne.above+","+laderOne.bottom+","+laderOne.height);
          System.out.println("laderOne area:"+area1);
           System.out.println("laderTwo above,bottomandheight:"+laderTwo.above+","+laderTwo.bottom+","+laderTwo.height);
           System.out.println("laderTwo area:"+area2);
           }
           }

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  • 原文地址:https://www.cnblogs.com/agony/p/2978653.html
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