/*
	This program demonstrate the use of flow layout
	It consists of a few buttons
	
*
*/

import javax.swing.*;
import java.awt.event.*;
import java.awt.*; // Needed for the layout manager

public class FlowLayoutButton extends JFrame
{
	private JPanel panel;
	private JButton b1;
	private JButton b2;
	private JButton b3;
	private JButton b4;
	
	public FlowLayoutButton()
	{
		// Sets the title of the window
		
		setTitle("Flow Layout Manager");
		
		// Sets the size of the window
		
		setSize(150, 150);
		
		// Sets the start location of the window
		
		setLocationRelativeTo(null);
		
		// Sets the action if the window is close
		
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		// Create the buttons
		
		b1 = new JButton("1");
		b2 = new JButton("2");
		b3 = new JButton("3");
		b4 = new JButton("4");
		
		// Create a panel and sets the layout of the panel		
		panel = new JPanel();
		panel.setLayout(new FlowLayout(FlowLayout.LEFT, 20, 15));
		
		// Add the buttons to the panel
		
		panel.add(b1);
		panel.add(b2);
		panel.add(b3);
		panel.add(b4);
		
		// Create the action listener for the buttons
		
		b1.addActionListener(new ButtonListener());
		b2.addActionListener(new ButtonListener());
		b3.addActionListener( new ButtonListener());
		b4.addActionListener(new ButtonListener());
		
		// Adds the panel to the content pane
		
		add(panel);
		
		// Sets the window to be visible
		
		setVisible(true);
		
	}
	
	/*
		Handles the events here if a button is pushed
		
	*
	*/
	
	private class ButtonListener implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
			if(e.getSource()==b1)
			{
				JOptionPane.showMessageDialog(null, "1");
				
			}
			
			if(e.getSource()==b2)
			{
				JOptionPane.showMessageDialog(null, "2");
			
			}
			
			if(e.getSource()==b3)
			{
				JOptionPane.showMessageDialog(null, "3");
				
			}
			
			if(e.getSource()==b4)
			{
				JOptionPane.showMessageDialog(null, "4");
				
			}
			
		}
	}
	
	public static void main(String[] args)
	{
		new FlowLayoutButton();
		
	}
}