borderlayout

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) {

<font size=-1>

            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();

            }

        });

    }

}