Java Swing BorderLayout

This tutorial will teach us about Java Swing BorderLayout with an example demo program. A border layout lays out a container, arranging and resizing its components to fit in five regions:

NORTH
SOUTH
EAST
WEST
CENTER

BorderLayout also supports relative positioning in the container:

PAGE_START
PAGE_END
LINE_START
CENTER
LINE_END

If you add a component without specifying a region, it will go to the CENTER by default. You don’t have to use all five regions—only the ones you need. Components are resized to fit the region.

BorderLayout Constructor

BorderLayout layout = new BorderLayout(); // default
BorderLayout layoutWithHGapVGap = new BorderLayout(10, 20); // horizontal and vertical

Java Demo Program

Sample Java program is as follows:

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.*;

/****************************************
 * Filename: BorderLayoutDemo.java
 * 
 * Java Tutorials - www.TestingDocs.com
 *****************************************/


//BorderLayout Demo Program
public class BorderLayoutDemo {
 public static void main(String[] args) {

 JFrame frame = new JFrame("BorderLayout - www.TestingDocs.com");
 JButton btn1 = new JButton("Button [NORTH]");
 JButton btn2 = new JButton("Button [CENTER]");
 JButton btn3 = new JButton("Button [WEST]");
 JButton btn4 = new JButton("Button [SOUTH]");
 JButton btn5 = new JButton("Button [EAST]");

 JPanel panel = new JPanel(new BorderLayout());
 panel.add(btn1, BorderLayout.NORTH);
 panel.add(btn2, BorderLayout.CENTER);
 panel.add(btn3, BorderLayout.WEST);
 panel.add(btn4, BorderLayout.SOUTH);
 panel.add(btn5, BorderLayout.EAST);
 

 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 frame.setSize(600,300);
 frame.getContentPane().add(panel);
 frame.setVisible(true);
 }
}