Tip for BoxLayout

BoxLayout enable we arrange components into two direction. Firstly is horizontal and secondly is vertical.

Example source code for set layout using BoxLayout

Set JPanel layout using BoxLayout

Complete source code below will show you how to set JPanel layout using BoxLayout

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COMPLETE SOURCE CODE FOR : SetJPanelLayoutUsingBoxLayout.java
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import javax.swing.*;

import java.awt.*;

public class SetJPanelLayoutUsingBoxLayout
{
public static void main(String[]args)
{
 //Create a window using JFrame with title ( Set JPanel layout using BoxLayout )
 JFrame frame=new JFrame("Set JPanel layout using BoxLayout");

 //Create a panel using JPanel
 JPanel panel=new JPanel();

 //Set JPanel layout using BoxLayout with vertical lay out
 //You can try change to BoxLayout.X_AXIS to make components lay out in horizontal
 panel.setLayout(new BoxLayout(panel,BoxLayout.Y_AXIS));

 //Create a button with text ( First button )
 JButton button=new JButton("First button");

 //Create a button with text ( Second button )
 JButton button2=new JButton("Second button");

 //Create a button with text ( Third button )
 JButton button3=new JButton("Third button");

 //Create a dimension with :
 //Width : 10 pixels
 //Height : 10 pixels
 Dimension dim=new Dimension(10,10);

 //Create an invisible box with dimension size and add into created panel
 //You can try eliminate this and see what happen
 panel.add(Box.createRigidArea(dim));

 //Add button into panel
 panel.add(button);

 //Create an invisible box with dimension size and add into created panel
 //You can try eliminate this and see what happen
 panel.add(Box.createRigidArea(dim));

 //Add button2 into panel
 panel.add(button2);

 //Create an invisible box with dimension size and add into created panel
 //You can try eliminate this and see what happen
 panel.add(Box.createRigidArea(dim));

 //Add button3 into panel
 panel.add(button3);

 //Create an invisible box with dimension size and add into created panel
 //You can try eliminate this and see what happen
 panel.add(Box.createRigidArea(dim));

 //add panel into created JFrame
 frame.add(panel);

 //Set default close operation for JFrame
 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

 //Set JFrame size
 frame.setSize(500,200);

 //Make JFrame locate at center of screen
 frame.setLocationRelativeTo(null);

 //Make JFrame visible
 frame.setVisible(true);
}
}

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JUST COMPILE AND EXECUTE IT
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