How do I create a JTextArea?

This example shows you how to create a simple JTextArea component in Java Swing application. First you’ll create an instance of JTextAread and passes the number of rows and columns. Next to add a scroll ability you can wrap the component inside a JScrollPane.

package org.kodejava.example.swing;

import javax.swing.*;
import java.awt.*;

public class TextAreaDemo extends JPanel {
    public TextAreaDemo() {
        initializeUI();
    }

    private void initializeUI() {
        this.setLayout(new BorderLayout());
        this.setPreferredSize(new Dimension(500, 200));

        // Creates a JTextArea with 5 rows and 40 columns. Then
        // wrap the JTextArea inside a JScrollPane for adding
        // scrolling abilities.
        JTextArea textArea = new JTextArea(5, 50);
        JScrollPane scrollPane = new JScrollPane(textArea);

        this.add(scrollPane, BorderLayout.CENTER);
    }

    public static void showFrame() {
        JPanel panel = new TextAreaDemo();
        panel.setOpaque(true);

        JFrame frame = new JFrame("JTextArea Demo");
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        frame.setContentPane(panel);
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                TextAreaDemo.showFrame();
            }
        });
    }
}

The result of our code snippet is:

Swing JTextArea Demo

Wayan Saryada

Founder at Kode Java Org
I am a programmer, a runner, a recreational diver, currently live in the island of Bali, Indonesia. Mostly programming in Java, Spring Framework, Hibernate / JPA. You can support my works by donating here. Thank you 🙂.

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.