keyTyped、keyPressed、keyReleased之间的区别是什么？

[xhwang]

有点迷糊，请了解的指点一下，呵呵
谢谢

[晨星]

KeyPressed是键被按下，KeyReleased是键被弹起，这两个都是更底层一些的事件。
KeyTypede是指有字符被输入，比如按住shift，再按A键，如果当时Caps Lock不亮，就产生一个输入大写A的事件。

[晨星]

JavaDoc的KeyEvent类的说明中有详细的描述：

KEY_TYPED
public static final int KEY_TYPED
The "key typed" event. This event is generated when a character is entered. In the simplest case, it is produced by a single key press. Often, however, characters are produced by series of key presses, and the mapping from key pressed events to key typed events may be many-to-one or many-to-many.

See Also:
Constant Field Values

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KEY_PRESSED
public static final int KEY_PRESSED
The "key pressed" event. This event is generated when a key is pushed down.

See Also:
Constant Field Values

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KEY_RELEASED
public static final int KEY_RELEASED
The "key released" event. This event is generated when a key is let up.

See Also:
Constant Field Values