j02070401.java

来自「经典java教材《java完美经典》一书中源码的完全收集」· Java 代码 · 共 20 行

import shape_package.*;

class j02070401
{
   static PARAM paramObj = new PARAM();// 使用 shape_package.PARAM 类
   public static void main(String para[])
   {
      shape shapeObj1;      //使用 shape_package.shape 类
      
      shapeObj1 = new circle();    //使用 shape_package.circle 类
      paramObj.R = 2.0;
      shapeObj1.setPara(paramObj);
      shapeObj1.drawShape();
      
      shapeObj1 = new rectangle();    //使用 shape_package.rectangle 类
      paramObj.W = 5.0;   paramObj.H = 6.0;
      shapeObj1.setPara( paramObj );
      shapeObj1.drawShape();
   }   
}