RE: [JUG-Delhi] Two Text Fields

Mystifier Wed, 23 Mar 2005 09:01:06 -0800

Title: Message

Enjoy.

Mystifier

/*
* Created on Mar 18, 2005
* Added another pair of Text Fields
*
*/
package mystifier.examples.keypress;

import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;

import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

/**
* @author mystifier
*
*/
public class KeyPressExample extends JPanel implements KeyListener {
private JTextField textField1;
private JTextField textField2;
private JTextField textField3;
private JTextField textField4;

public KeyPressExample() {
super(new GridBagLayout());

        textField1 = new JTextField(20);
        textField1.addKeyListener(this);

        textField2 = new JTextField(20);

        textField3 = new JTextField(20);
        textField3.addKeyListener(this);

        textField4 = new JTextField(20);
        //Add Components to this panel.
        GridBagConstraints c = new GridBagConstraints();

        add("TextFiled 1 : ", textField1, c);
        add("TextFiled 2 : ", textField2, c);
        add("TextFiled 3 : ", textField3, c);
        add("TextFiled 4 : ", textField4, c);

    }

/**
*
*/
private void add(String labelText,JTextField textField,GridBagConstraints c) {
        add(new JLabel(labelText));
        c.gridwidth = GridBagConstraints.REMAINDER;
        add(textField, c);
}

//The three events
public void keyTyped(KeyEvent e) {}

public void keyPressed(KeyEvent e) {}

public void keyReleased(KeyEvent e) {
  if(e.getComponent() == this.textField1)
   textField2.setText(textField1.getText());
  else if(e.getComponent() == this.textField3)
   textField4.setText(textField3.getText());
}

    /**
     * Create the GUI and show it. For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
     */
    private static void createAndShowGUI() {
        //Make sure we have nice window decorations.
        JFrame.setDefaultLookAndFeelDecorated(true);

        //Create and set up the window.
        JFrame frame = new JFrame("TextDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        //Create and set up the content pane.
        JComponent newContentPane = new KeyPressExample();
        newContentPane.setOpaque(true); //content panes must be opaque
        frame.setContentPane(newContentPane);

        //Display the window.
        frame.pack();
        frame.setVisible(true);
    }
    public static void main(String[] args) {
        //Schedule a job for the event-dispatching thread:
        //creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }
}

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Chetan Pandey
Sent: Wednesday, March 23, 2005 4:55 PM
To: Indian Java Users Group at Delhi
Subject: RE: [JUG-Delhi] Two Text Fields

Dear Mystifier:

You code works for me. Thanks a lot.

But I have this minor difficulty.

The thing is I have two pair of Textfields(tf1,tf4) and (tf2,tf5).

When something is typed in tf1, it should update it to tf4 and the same in case of tf2 and tf5.

But since I have only one method for keypressed(KeyEvent e), how do I tell keyPressed to distinguish between key pressed events in tf1 and tf2.

Pls check code below:

tf1 = new JTextField(10);
  tf1.addKeyListener(this);
  tf1.setActionCommand("tf1"); // I know this aint right

  tf2 = new JTextField(10);
  tf2.addKeyListener(this);
  tf2.setActionCommand("tf2"); // I know this aint right

.

.

.

public void keyReleased(KeyEvent e) {
String str1;
if( (e.getActionCommand()).equals("tf1") )    // what instead of e.getActionCommand() so that // it will recognize the correct text field
{
str1 = (tf1.getText().toString()).trim();
tf4.setText(str1 );
}

else if( (e.getActionCommand()).equals("tf4") )
{
str1 = (tf2.getText().toString()).trim();
  tf5.setText(str1);
}

}

Thanks a lot again.

Chetan

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