test1.java

还不错的java基本实例

package ch6;
import javax.swing.JOptionPane;
public class Test1 {
    public static void main(String[] args){
		 Point myp=new Point(100,100);
		 Rectangle rec1 = new Rectangle(myp,50,50);
         Rectangle rec2 = new Rectangle(10,20,100,50);
         Rectangle rec3   = new Rectangle();
         
         String output = "rec1:\n" ;
         output += rec1.print() +"\n"; 
         output += "rec2:\n" ;
         output += rec2.print() +"\n"; 
         output += "rec3:\n" ;
         output += rec3.print() ;
         JOptionPane.showMessageDialog( null,output);    
    }
}