是否有可能檢測到哪個鍵被點擊用於JAVA鍵監聽器事件？ （按鍵，鍵入或釋放）

Question

是否有可能知道在jTextField中的JAVA NetBeans中按哪個鍵？ 另外，當按下回車鍵或esc鍵時，停止檢測。

謝謝你的幫助！

Answer 1

當然這是可能的。試試這樣的：

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);