/*
	This is a simple JCombo Box GUI
	
*
*/

import javax.swing.*;
import java.awt.event.*;

public class JCombo_Box extends JFrame
{
	// Sets to private so only the same class can access these members
	
	private JComboBox jcombo;
	private JPanel panel;
	private JButton ok;
	
	public JCombo_Box()
	{
		// Sets the title of the window
		
		setTitle("JCombo Box Window");
		
		// Sets the size of the window
		
		setSize(300, 200);
		
		// Sets the appearance location of the window to the middle of the screen
		
		setLocationRelativeTo(null);
		
		// Sets the action when a window is close
		
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		// Creates a JComob Box
		
		jcombo = new JComboBox();
		
		// Adds the item to the JCombo Box
		
		jcombo.addItem("Jan.");
		jcombo.addItem("Feb.");
		jcombo.addItem("March");
		jcombo.addItem("April");
		jcombo.addItem("May");
		jcombo.addItem("June");
		jcombo.addItem("July");
		jcombo.addItem("Aug.");
		jcombo.addItem("Sept.");
		jcombo.addItem("Oct.");
		jcombo.addItem("Nov.");
		jcombo.addItem("Dec.");
		
		// Create a panel
		
		panel = new JPanel();
		
		// Creates a OK button
		
		ok = new JButton("OK");
		
		// Creates a event listener to handle the event
		
		ok.addActionListener(new okButtonListener());
		
		// Adds the JCombo Box and ok button to the panel
		
		panel.add(jcombo);
		panel.add(ok);
		
		// Adds the window to the content pane
		
		add(panel);
		
		// Sets the window to be true
		
		setVisible(true);
		
	}
	
	/*
		JCombo Box returns an object, so when we get the selection
		We must specify what is the type of the object
		In this case the type is a String
		
	*
	*/
	
	private class okButtonListener implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
			if(e.getSource()==ok)
			{
				String select = (String)jcombo.getSelectedItem();
				
				JOptionPane.showMessageDialog(null, "You have selected " + select);
				
			}
		}
	}
	
	public static void main(String[] args)
	{
		new JCombo_Box();
		
	}
}