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




public class Okno extends JFrame{

	private JButton button = new JButton("Test");
	private JTextField field = new JTextField(5);
	private JRadioButton radio1 = new JRadioButton("Male");
	private JRadioButton radio2 = new JRadioButton("Female");


	public Okno(){

		this.setTitle("Hello");
		this.setBounds(800,600,0,0);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setVisible(true);

		Container contain = this.getContentPane();
		contain.setLayout(new GridLayout(3,2,2,2));
		contain.add(field);


		ButtonGroup group = new ButtonGroup();
		group.add(radio1);
		group.add(radio2);
		contain.add(radio1);
		contain.add(radio2);
		radio2.setSelected(true);

		button.addActionListener(new ButtonEventListener());
		contain.add(button);






		}

	class ButtonEventListener implements ActionListener{
		public void actionPerformed(ActionEvent e ) {
			button.setText("Clciked");

		}

	}
	}