public abstract class KeyAdapter implements KeyListener {
/**
* Invoked when a key has been typed.
* This event occurs when a key press is followed by a key release.
*/
public void keyTyped(KeyEvent e) {} /**
* Invoked when a key has been pressed.
*/
public void keyPressed(KeyEvent e) {} /**
* Invoked when a key has been released.
*/
public void keyReleased(KeyEvent e) {}
}//////////
好像不用抽象的也可以,是吗?
/**
* Invoked when a key has been typed.
* This event occurs when a key press is followed by a key release.
*/
public void keyTyped(KeyEvent e) {} /**
* Invoked when a key has been pressed.
*/
public void keyPressed(KeyEvent e) {} /**
* Invoked when a key has been released.
*/
public void keyReleased(KeyEvent e) {}
}//////////
好像不用抽象的也可以,是吗?
解决方案 »
免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货