Make sure that my jTextfield has the focus when a JFrame is createdTag(s): Swing


In a JFrame, use a small WindowAdapter to listen to the WindowOpened event. From there, simply request the focus for the JTextfield. This is not needed with the Appletviewer or in Application, but with some browsers (like Netscape), you need to do it.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class MyFrame extends JFrame {

JTextField field1;
JTextField field2;
JPanel panel;

 public MyFrame() {
  super( "This is my Frame" );
  panel = new JPanel();
  field1 = new JTextField( 10 );
  field2 = new JTextField( 10 );
  panel.add( new JLabel("Field 1:"));
  panel.add( field1 );
  panel.add( new JLabel("Field 2:"));
  panel.add( field2 );
  getContentPane().add( "Center", panel );
  addWindowListener( new WindowAdapter() {
   public void windowOpened( WindowEvent e ){
        field1.requestFocus();
     }
   } ); 
  pack();
  setVisible( true );
  }

}
To try it :
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class MyFrameApplet extends JApplet {
public void init() {
  MyFrame myFrame = new MyFrame();
  }
}

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