How to Set Focus on JTextField?

Question

I make my game run without mouse so using pointer is not a choice. High Score menu will show when player lose.

this is my code

    highScore=new MyTe         


        

Answer 1

This code mouse cursor “jtextfield” “Jcombobox” location focused

 try {
     Robot  robot = new Robot();
        int x = Jtextfield.getLocationOnScreen().x;
        int y=  Jtextfield.getLocationOnScreen().y;
       JOptionPane.showMessageDialog(null, x+"x< - y>"+y);// for I location see
        robot.mouseMove(x, y);
    } catch (AWTException ex) { 
        ex.printStackTrace();
    } 

Answer 2

If you want your JTextField to be focused when your GUI shows up, you can use this:

in = new JTextField(40);
f.addWindowListener( new WindowAdapter() {
    public void windowOpened( WindowEvent e ){
        in.requestFocus();
    }
}); 

Where f would be your JFrame and in is your JTextField.

Answer 3

In my case nothing above worked untill I called requestFocus() AFTER my constructor has returned.

MyPanel panel = new MyPanel(...);
frame.add(panel);
panel.initFocus();

MyPanel.initFocus() would have:

myTextField.requestFocus();

And it works.

Answer 4

While yourTextField.requestFocus() is A solution, it is not the best since in the official Java documentation this is discourage as the method requestFocus() is platform dependent.

The documentation says:

Note that the use of this method is discouraged because its behavior is platform dependent. Instead we recommend the use of requestFocusInWindow().

Use yourJTextField.requestFocusInWindow() instead.