BorderLayout

Java Swing Tutorial Explaining the BorderLayout . BorderLayout places swing components in the North, South, East, West and center of a container. All extra space is placed in the center area. You can add horizontal and vertical gaps between the areas. Every content pane is initialized to use a BorderLayout. Components are added to a BorderLayout by using the add method. JFrame’s content pane default layout manager: BorderLayout. In BorderLayout, a component’s position is specified by a second argument to add.

 

 

 

BorderLayout Source Code

/*
 * BorderLayoutDemo.java is a 1.4 application that requires no other files.
 */

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;

public class BorderLayoutDemo {
    public static boolean RIGHT_TO_LEFT = false;

    public static void addComponentsToPane(Container contentPane) {
//    	Use BorderLayout. Default empty constructor with no horizontal and vertical 
//    	gaps
    	contentPane.setLayout(new BorderLayout(5,5));	 
        if (!(contentPane.getLayout() instanceof BorderLayout)) {
            contentPane.add(new JLabel("Container doesn't use BorderLayout!"));
            return;
        }

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

        JButton jbnSampleButtons = new JButton("Button 1 (PAGE_START)");
        contentPane.add(jbnSampleButtons, BorderLayout.PAGE_START);

        jbnSampleButtons = new JButton("Button 2 (CENTER)");
        jbnSampleButtons.setPreferredSize(new Dimension(200, 100));
        contentPane.add(jbnSampleButtons, BorderLayout.CENTER);

        jbnSampleButtons = new JButton("Button 3 (LINE_START)");
        contentPane.add(jbnSampleButtons, BorderLayout.LINE_START);

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

        jbnSampleButtons = new JButton("5 (LINE_END)");
        contentPane.add(jbnSampleButtons, BorderLayout.LINE_END);
    }

    private static void createAndShowGUI() {
        JFrame.setDefaultLookAndFeelDecorated(true);

        JFrame frame = new JFrame("BorderLayout Source Demo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        //Set up the content pane and add swing components to it
        addComponentsToPane(frame.getContentPane());

        frame.pack();
        frame.setVisible(true);
    }

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

Output

Download BorderLayout Source Code