import javax.swing.JButton;
import javax.swing.JFrame;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.ButtonGroup;
import javax.swing.JRadioButton;

class radiogomb extends JFrame
{
        JButton GombElso;
	ButtonGroup csoport;
	JRadioButton radiogomb1;
	JRadioButton radiogomb2;
	JRadioButton radiogomb3;
	JRadioButton radiogomb4;
		
        radiogomb()
        {
		this.setSize(800, 600);
                GombElso = new JButton();
		radiogomb1 = new JRadioButton();
		radiogomb2 = new JRadioButton();
		radiogomb3 = new JRadioButton();
		radiogomb4 = new JRadioButton();
		csoport = new ButtonGroup();
                this.setVisible(true);
                this.setLayout(null);

                GombElso.setText("Valami");
		radiogomb1.setText("Valami");
		radiogomb2.setText("Valami2");
		radiogomb3.setText("Valami3");
		radiogomb4.setText("Valami4");
		radiogomb1.setSelected(false);
		radiogomb2.setSelected(true);
		radiogomb3.setSelected(false);
		radiogomb4.setSelected(false);				
				
                GombElso.setBounds(10,10, 100, 30);
				
		radiogomb1.setBounds(120,10,100,20);
		radiogomb2.setBounds(120,30,100,20);
		radiogomb3.setBounds(120,50,100,20);
		radiogomb4.setBounds(120,70,100,20);
				
		csoport.add(radiogomb1);
		csoport.add(radiogomb2);
		csoport.add(radiogomb3);
		csoport.add(radiogomb4);
				
                this.add(GombElso);
		this.add(radiogomb1);
		this.add(radiogomb2);
		this.add(radiogomb3);
		this.add(radiogomb4);
		GombElso.addActionListener(new ButtonListener1());
        }
        public static void main(String args[])
        {
                new radiogomb();
        }		
	class ButtonListener1 implements ActionListener 
	{
		public void actionPerformed(ActionEvent e)
		{
			if(radiogomb1.isSelected()) GombElso.setText("Első");
			if(radiogomb2.isSelected()) GombElso.setText("Második");
			if(radiogomb3.isSelected()) GombElso.setText("Harmadik");
			if(radiogomb3.isSelected()) GombElso.setText("Negyedik");
		}
        }
}