Java Code

import java.awt.*;
import javax.swing.*;
public class JOptionMessages extends JApplet
{
	JOptionPane option;
	public void init( )
	{
		//	question icon
		JOptionPane.showMessageDialog(null,
				"Do you agree?", 
				"Title Goes Here", JOptionPane.QUESTION_MESSAGE);
		
		// information icon
		JOptionPane.showMessageDialog(null,
		    "Agree!", 
		    "Title Goes Here", JOptionPane.INFORMATION_MESSAGE);

		// information icon
		JOptionPane.showMessageDialog(null,
		    "There's been an error", 
		    "Title Goes Here", JOptionPane.ERROR_MESSAGE);

		// warning icon
		JOptionPane.showMessageDialog(null,
		    "Warning! Something went wrong!", 
		    "Title Goes Here", JOptionPane.WARNING_MESSAGE);

		// no icon
		JOptionPane.showMessageDialog(null,
		    "Message for you.", 
		    "Title Goes Here", JOptionPane.PLAIN_MESSAGE);

	}
}