pointtest.java

用java实现继承实例

public class PointTest{
public static void main (String args[]){
	 Point p = new Point (1,2);
	 SpecializedPoint sp1= new  SpecializedPoint ();
	 SpecializedPoint sp2= new  SpecializedPoint ();
	sp1.setX(3);
	sp1.setY(4);
	System.out.println("sp1 = " + sp1);
	sp2.setX(5);
	sp2.setY(4);
	System.out.println("sp2 = " + sp2);
	
}
}