是否可以检测为 JAVA 键侦听器事件单击了哪个键？ （按键，键入或释放）[关闭]

Question

是否有可能知道在 jTextField 中的 JAVA NetBeans 中按下了哪个键？ 另外，当按下 enter 键或 esc 键时，停止检测。

感谢您的帮助！

Answer 1

当然可以。试试这样的：

KeyListener keyListener = new KeyListener() {

            @Override
            public void keyTyped(KeyEvent e) {
                // TODO Auto-generated method stub

            }

            @Override
            public void keyReleased(KeyEvent e) {
                // TODO Auto-generated method stub

            }

            @Override
            public void keyPressed(KeyEvent e) {
                // TODO Auto-generated method stub
                int keyCode = e.getKeyCode();
                char keyChar = e.getKeyChar();

                System.out.println("Code: "+keyCode+" , "+"Char: "+keyChar);

                if (keyCode == KeyEvent.VK_ENTER) {
                    System.out.println("Enter pressed");
                    //do whatever you want here

                }else if (keyCode == KeyEvent.VK_ESCAPE) {
                    System.out.println("Esc pressed");
                    //do whatever you want here
                }
            }
        };

this.textField.addKeyListener(keyListener);