Detect enter press in JTextField

Question

Is it possible to detect when someone presses Enter while typing in a JTextField in java? Without having to create a button and set it as the default.

Answer 1

First add action command on JButton or JTextField by:

JButton.setActionCommand("name of command");
JTextField.setActionCommand("name of command");

Then add ActionListener to both JTextField and JButton.

JButton.addActionListener(listener);
JTextField.addActionListener(listener);

After that, On you ActionListener implementation write

@Override
public void actionPerformed(ActionEvent e)
{
    String actionCommand = e.getActionCommand();

    if(actionCommand.equals("Your actionCommand for JButton") || actionCommand.equals("Your   actionCommand for press Enter"))
    {
        //Do something
    }
}

Answer 2

Just use this code:

SwingUtilities.getRootPane(myButton).setDefaultButton(myButton);

Answer 3

Add an event for KeyPressed.

private void jTextField1KeyPressed(java.awt.event.KeyEvent evt) {
  if(evt.getKeyCode() == KeyEvent.VK_ENTER) {
      // Enter was pressed. Your code goes here.
   }
} 

Answer 4

public void keyReleased(KeyEvent e)
{
    int key=e.getKeyCode();
    if(e.getSource()==textField)
    {
        if(key==KeyEvent.VK_ENTER)
        { 
            Toolkit.getDefaultToolkit().beep();
            textField_1.requestFocusInWindow();                     
        }
    }

To write logic for 'Enter press' in JTextField, it is better to keep logic inside the keyReleased() block instead of keyTyped() & keyPressed().