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

User · Accepted Answer

A JTextField was designed to use an ActionListener just like a JButton is  See the addActionListener   method of JTextField    For example   Action action   new AbstractAction          Override     public void actionPerformed ActionEvent e                System out println  some action              JTextField textField   new JTextField 10   textField addActionListener  action      Now the event is fired when the Enter key is used    Also  an added benefit is that you can share the listener with a button even if you don t want to make the button a default button   JButton button   new JButton  Do Something    button addActionListener  action      Note  this example uses an Action  which implements ActionListener because Action is a newer API with addition features  For example you could disable the Action which would disable the event for both the text field and the button

User · Answer

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    amp  keyPressed

User · Answer

If you want to set a default button action in a JTextField enter  you have to do this     put this after initComponents     textField addActionListener button getActionListeners   0      It is  0  because a button can has a lot of actions  but normally just has one  ActionPerformed

User · Answer

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

User · Answer

Do you want to do something like this        JTextField mTextField   new JTextField        mTextField addKeyListener new KeyAdapter              Override         public void keyPressed KeyEvent e                if e getKeyCode      KeyEvent VK ENTER                      something like                     mTextField getText                      or                     mButton doClick

User · Answer

The other answers  including the accepted ones  are good  but if you already use Java8  you can do the following  in a shorter  newer way    textField addActionListener      ae - gt              dostuff            As the accepted answer told  you can simply react with an ActionListener  which catches the Enter-Key   However  my approach takes benefit of the functional concepts which was introduced in Java 8   If you want to use the same action for example for a button and the JTextField  you can do the following   ActionListener l   ae - gt          do stuff    button addActionListener l   textField addActionListener l     If further explaination is needed  please let me know

User · Answer

Just use this code   SwingUtilities getRootPane myButton  setDefaultButton myButton

User · Answer

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

User · Answer

JTextField function new JTextField 8      function addActionListener new ActionListener                     public void actionPerformed ActionEvent e                              statements                            all you need to do is addActionListener to the JTextField like above  After you press Enter the action will performed what you want at the statement

User · Answer

For each text field in your frame  invoke the addKeyListener method   Then implement and override the keyPressed method  as others have indicated  Now you can press enter from any field in your frame to activate your action   Override         public void keyPressed KeyEvent e                if e getKeyCode      KeyEvent VK ENTER                     perform action

[java] Detect enter press in JTextField

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