actionPerformed()里如何捕捉回车?

Question

我记得还是用KeyListener来处理输入比较合适

Answer 1

下面的代码片断，你自己看看吧，已知cardNumber是一个TextField类的实例cardNumber.addActionListener(
      new ActionListener()
      {
        public void actionPerformed(ActionEvent e)
        {
          cl.show(pc,cardNumber.getText());
        }
      }
    );

Answer 2

public void textField1_KeyPressed(java.awt.event.KeyEvent keyEvent) 
{
ivjTextField1.setText("");
ivjTextField1.setText(String.valueOf(keyEvent.getKeyCode()));
}

Answer 3

public void keyReleased(KeyEvent e) 
   {
      char c = e.getKeyChar();
      //System.out.println((int)c);
      if(((int)c == 0) || ((int)c == 27) || ((int)c == 65535) || (c == KeyEvent.VK_BACK_SPACE) || (c == KeyEvent.VK_DELETE) || (c == KeyEvent.VK_ENTER) || (c == KeyEvent.VK_TAB)|| (c == KeyEvent.VK_SHIFT)|| e.isActionKey()) 
      {
         if(c == KeyEvent.VK_BACK_SPACE)
         {
          
         }
         return;
      }
}