请教高手编译问题

Question

import java.awt.*;
import java.awt.event.*;public class WindowEventTest extends Frame implements WindowListener
{
public static void main(String args[])
{
WindowEventTest test=new WindowEventTest();
test.setSize(300,200);
test.addWindowListener(test);
test.show();
}
}编译的时候提示错误
WindowEventTest is not abstract and does not override abstract method windowOpened(java.awt.event.WindowEvent)in java.awt.event.WindowListener请教为什么会出现这种错误，怎么解决

Answer 1

实现一个接口就要去实现它里面声明的方法？WindowListener接口有7个抽象方法，分别是：public void windowActivated(WindowEvent e); 
public void windowClosed(WindowEvent e);
public void windowClosing(WindowEvent e);
public void windowDeactivated(WindowEvent e);
public void windowDeiconified(WindowEvent e);
public void windowIconified(WindowEvent e);
public void windowOpened(WindowEvent e);你要在你的类中一一实现。建议继承WindowAdapter，它实现了WindowListener。

Answer 2

你实现了 WindowListener 接口，就要把它的代码写全