interfacetester.java

Java与面向对象程序设计实验教学讲义.复数类的实现,复数类的复杂运算,身份证号码的分析,图形界面设计

public class InterfaceTester {
   public static void main(String  args[]){
      Rectangle rect=new Rectangle(5,6);
      System.out.println("Area of rect = " + rect.area());
      Circle cir=new Circle(2.0);
      System.out.println("Area of cir = " + cir.area());
   }
}