variabletester.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 VariableTester {
	public static void main(String []args)
	{
	  Shape2D var1,var2;		
		var1=new  Rectangle(5,6);
		System.out.println("Area of var1 = " + var1.area());		
		var2=new Circle(2.0);	
		System.out.println("Area of var2 = " + var2.area());			
	}
}