import javax.swing.JFrame;
import javax.swing.JProgressBar;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.SwingConstants;
class Program extends JFrame
{
	JProgressBar folyamatsav;
	JButton gomb;
	Program()
	{
		folyamatsav = new JProgressBar();
		gomb = new JButton("Klikk ide");
		
		folyamatsav.setMinimum(0);
		folyamatsav.setMaximum(100);
		folyamatsav.setValue(20);
		folyamatsav.setBounds(50, 50, 200, 30);		
		folyamatsav.setStringPainted(true);
				
		gomb.setBounds(100, 100, 100, 30);
		gomb.addActionListener(new Gomb_Click());
		add(folyamatsav);
		add(gomb);
		setLayout(null);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setSize(400, 300);
		setVisible(true);
	}
	class Gomb_Click implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
			int a = folyamatsav.getValue();
			a++;
			folyamatsav.setValue(a);
			folyamatsav.setString(a + " %");
		}
	}
	public static void main(String[] argv)
	{
		new Program();
	}
}