本文介绍了Java KeyListener-如何检测是否按下了任何键?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我已将KeyListener添加到TextArea，并希望检查是否按下了任何键.我有以下内容，但检查所有字母和数字太笨拙了:
I've added a KeyListener to a TextArea and wish to check if any key is pressed down.I have the following but it's too clumsy to check for all the letters and numbers:
public void keyPressed(KeyEvent e) {
if(e.getKeyCode() == KeyEvent.VK_A || e.getKeyCode() == KeyEvent.VK_B ||
e.getKeyCode() == KeyEvent.VK_C ||e.getKeyCode() == KeyEvent.VK_D etc...){
}
}
推荐答案
您不需要任何if语句.每次按下键都会触发keyPressed方法，因此您会自动陷入该方法中.
You wouldn't need any if statements. The keyPressed method is fired whenever a key is pressed, so you're automatically thrown into the method.
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