codehub27: Java Swing Application to display the given message

Let us create a simple application to display the message in the text field to a separate screen.

What are the components you need?

These the Swing components used in the program.

Let us implement the sample application.

Program implementation:

First, include the built-in packages javax.swing,java.awt,java.awt.event.
Create a public class with main() function.
Design the components as follows.
A frame ,A Panel , Label , Text field and a submit button. Let us make objects for each components.
Set the frame object’s heading as “Display the message”. Jpanel object p1 is created.
Label object is created with the message “Enter the message”. It makes the user to enter the message.
TextField object is declared with size of 15.
A button object is initialised with button name as “Submit”.
Let us make the components into a row. Set the layout as Flow layout.
Add the textfield,button and label into the panel.
When you enter the message in the text field and click the submit button,it calls this part of the program.
This part gets the string into msg variable.
It displays the message in a separate window.

Program:

import javax.swing.*;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

public class SampleApp {

public static void main(String[] args) {

JFrame f1 = new JFrame("Display the Message");

JPanel p1 = new JPanel();

JLabel l1 = new JLabel("Enter the message:");

JTextField txtField = new JTextField(15);

JButton button1 = new JButton("Submit");

p1.setLayout(new FlowLayout()); // Arranging all components in a row

p1.add(l1);

p1.add(txtField);

p1.add(button1);

//button event

button1.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

String msg = txtField.getText();

JOptionPane.showMessageDialog(f1, "Hi, your message is : " + msg + "!");

}

});

f1.add(p1);

f1.setSize(250, 150);

f1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

f1.setVisible(true);

}

Here is the output.

That’s all. A sample swing application is created here. Hope this code is useful to you.

codehub27