Output:
Code:
/**
* File: textFieldToTextField.java
* Tiltle: Copy Text from JTextField to JTextField
* Author: http://java-code-complete.blogspot.com
*/
//Java Core Package
import javax.swing.*;
//Java Extension Package
import java.awt.*;
import java.awt.event.*;
public class textFieldToTextField extends JFrame {
//Initializing JTextField
private JTextField field1, field2;
//Setting up GUI
public textFieldToTextField() {
//Setting up the Title of the Window
super("Copy Text from JTextField to JTextField");
//Set Size of the Window (WIDTH, HEIGHT)
setSize(320,100);
//Exit Property of the Window
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Constructing JTextField with a size of 20
field1 = new JTextField(20);
field2 = new JTextField(20);
//Setting up the container ready for the components to be added.
Container pane = getContentPane();
setContentPane(pane);
//Setting up the container layout
FlowLayout flow = new FlowLayout(FlowLayout.LEFT);
pane.setLayout(flow);
//Implemeting Even-Listener on JTextField's reference name "field1" using ActionListener
field1.addActionListener(
new ActionListener() {
//Handle JTextField event if Enter key is pressed
public void actionPerformed(ActionEvent event) {
//Copy Text from JTextField field1 to field2
field2.setText(field1.getText());
//The JTextField will be empty after Enter key is pressed ready for the next input.
field1.setText(null);
}
}
);
//Implemeting Even-Listener on JTextField's reference name "field2" using ActionListener
field2.addActionListener(
new ActionListener() {
//Handle JTextField event if Enter key is pressed
public void actionPerformed(ActionEvent event) {
//Copy Text from JTextField field2 to field1
field1.setText(field2.getText());
//The JTextField will be empty after Enter key is pressed ready for the next input.
field2.setText(null);
}
}
);
//Adding the JTextField components to the container
pane.add(field1);
pane.add(field2);
/**Set all the Components Visible.
* If it is set to "false", the components in the container will not be visible.
*/
setVisible(true);
}
//Main Method
public static void main (String[] args) {
textFieldToTextField jtff = new textFieldToTextField();
}
}
Important Part of the Program:
field1.addActionListener(
new ActionListener() {
//Handle JTextField event if Enter key is pressed
public void actionPerformed(ActionEvent event) {
//Copy Text from JTextField field1 to field2
field2.setText(field1.getText());
//The JTextField will be empty after Enter key is pressed ready for the next input.
field1.setText(null);
}
}
);
//Implemeting Even-Listener on JTextField's reference name "field2" using ActionListener
field2.addActionListener(
new ActionListener() {
//Handle JTextField event if Enter key is pressed
public void actionPerformed(ActionEvent event) {
//Copy Text from JTextField field2 to field1
field1.setText(field2.getText());
//The JTextField will be empty after Enter key is pressed ready for the next input.
field2.setText(null);
}
}
);
