How to make so that when you press the Enter button, JButton triggered?

Well, you need to dig towards the KeyListener interface. Here is a good example of how it works http://java-lang.at.ua/publ/obrabotka_sobytij/keylistener_obrabotka_sobytij_klaviatury/2-1-0-4

Well, for example:

JPanel panel = new JPanel(); panel.addKeyListener(new KeyAdapter() { public void keyReleased(KeyEvent e) { if(e.getKeyCode() == 10){ //10 - код клавиши Enter // какой-то код, который должен выполниться } } }); 

you need to assign a default button, which just works when you press enter

 JButton enter = new JButton(); JRootPane rootPane = SwingUtilities.getRootPane(enter); rootPane.setDefaultButton(enter);