Java Frame

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

class ForStudents extends JFrame implements ActionListener

{

	private static final int width = 500;
	private static final int height = 500;
	private static final int fxo = 150;
	private static final int fxy = 250;

	private JButton btnOK;


	public ForStudents()
	{

	Container contain = getContentPane();
	setSize(width,height);
	setResizable(false);
	setTitle("This is you sample Frame");
	setLocation(fxo,fxy);

	contain.setLayout(new FlowLayout());

	 btnOK = new JButton("PRINT");
	 contain.add(btnOK);
	 btnOK.addActionListener(this);


	}


public static void main(String[]args)
{

	ForStudents frame = new ForStudents();
	frame.setVisible(true);



}



public void actionPerformed(ActionEvent event)
{

JButton btnclick = (JButton)event.getSource();
String btnText = btnclick.getText();
setTitle("You Clicked " + btnText);


}


}