Java Swing BorderLayout Example

In this example, we will learn how to use BorderLayout in GUI/swing based applications.
BorderLayout is a simple layout manager that can be handy in certain layouts. It is a default layout manager for JFrame, JWindow, JDialog, JInternalFrame, and JApplet.

Java Swing BorderLayout Example

The following example demonstrates the usage of a BorderLayout manager. Note that in below example, a BorderLayout object has five areas. These areas are specified by the BorderLayout constants:
PAGE_START
PAGE_END
LINE_START
LINE_END
CENTER
Here is the complete code:
package net.javaguides.javaswing.examples;

import javax.swing.*;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;

/**
 * Class demonstrates the usage of BorderLayout.
 * @author javaguides.net
 *
 */
public class BorderLayoutDemo {
    public static boolean RIGHT_TO_LEFT = false;

    public static void addComponentsToPane(Container pane) {

        // set BorderLayout to Panel
        pane.setLayout(new BorderLayout());

        if (!(pane.getLayout() instanceof BorderLayout)) {
            pane.add(new JLabel("Container doesn't use BorderLayout!"));
            return;
        }

        if (RIGHT_TO_LEFT) {
            pane.setComponentOrientation(
                java.awt.ComponentOrientation.RIGHT_TO_LEFT);
        }

        JButton button = new JButton("Button 1 (PAGE_START)");
        pane.add(button, BorderLayout.PAGE_START);

        //Make the center component big, since that's the
        //typical usage of BorderLayout.
        button = new JButton("Button 2 (CENTER)");
        button.setPreferredSize(new Dimension(200, 100));
        pane.add(button, BorderLayout.CENTER);

        button = new JButton("Button 3 (LINE_START)");
        pane.add(button, BorderLayout.LINE_START);

        button = new JButton("Long-Named Button 4 (PAGE_END)");
        pane.add(button, BorderLayout.PAGE_END);

        button = new JButton("5 (LINE_END)");
        pane.add(button, BorderLayout.LINE_END);
    }

    /**
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event dispatch thread.
     */
    private static void createAndShowGUI() {

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

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        //Set up the content pane.
        addComponentsToPane(frame.getContentPane());

        //Display the window.
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }
}

Output


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