请教高手编译问题
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