useinheritsexample.java

来自「金旭亮的java教案」· Java 代码 · 共 33 行

import java.awt.*; 

public class UseInheritsExample { 
	
		
   public static void main(String args[]) {
      RedWindow redW=new RedWindow();
     
    }
}


 class SimplestWindow extends Window { 
	
			
	public SimplestWindow(Frame f)
	{	
		super(f); // Window must belong to a Frame
    
	} 
}

class RedWindow extends SimplestWindow
{
	public RedWindow()
	{
		super(new Frame());
		setBackground(Color.red);
        setSize(200,100);
        setVisible(true);
        setLocation(50,50);
	}
}