import java.awt.EventQueue;
import javax.swing.JOptionPane;
import javax.swing.JFrame;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.Button;
import javax.swing.JProgressBar;

public class main {

    private JFrame frame;

    /**
     * Launch the application.
     */
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    main window = new main();
                    window.frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    /**
     * Create the application.
     */
    public main() {
        initialize();
    }

    /**
     * Initialize the contents of the frame.
     */
    private void initialize() {
        frame = new JFrame();
        frame.setBounds(100, 100, 450, 300);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().setLayout(null);

        JButton allButton = new JButton("Klick Mich!");
        allButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                progress1.setValue(50);
                main.infoBox("Hallo Welt!", "Hallo Welt!");


            }
        });
        allButton.setBounds(10, 11, 418, 111);
        frame.getContentPane().add(allButton);

        Button button = new Button("Beenden!");
        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                System.exit(0);
            }
        });
        button.setBounds(10, 153, 418, 96);
        frame.getContentPane().add(button);

        JProgressBar progress1 = new JProgressBar();
        progress1.setStringPainted(true);
        progress1.setBounds(20, 124, 408, 23);
        frame.getContentPane().add(progress1);
    }
     public static void infoBox(String infoMessage, String titleBar)
        {


         JOptionPane.showMessageDialog(null, infoMessage, titleBar, JOptionPane.INFORMATION_MESSAGE);
        }
}