Ich erstelle einen Launcher und möchte eine angepasste ProgressBar haben. Ich habe einige Nachforschungen angestellt und es ist mit JavaFX möglich (habe nie etwas damit gemacht) und es ist möglich, die Benutzeroberfläche zu ersetzen. Ich suche eine Bar mit abgerundeten Kanten und einer abgerundeten Füllung. Etwas wie das

package gui;

import java.awt.Desktop;
import java.awt.EventQueue;
import java.awt.Frame;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.IOException;
import java.net.URISyntaxException;
import java.net.URL;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JProgressBar;

public class Gui extends JFrame {

    private static final long serialVersionUID = 1L;
    private final JPanel contentPane;
    final JFrame frame = new JFrame();
    int pX,pY;

    /**
     * Launch the application.
     */
    public static void main(final String[] args) {

        EventQueue.invokeLater(new Runnable() {

            @Override
            public void run() {
                try {
                    final Gui frame = new Gui();
                    frame.setVisible(true);
                } catch (final Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }


    /**
     * Create the frame.
     */
    public Gui() {
        this.setTitle("Exile Launcher");
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setBounds(0, 0, 1000, 563);
        this.contentPane = new JPanel();
        this.contentPane.setBorder(null);
        this.setContentPane(this.contentPane);
        this.contentPane.setLayout(null);
        this.setUndecorated(true);
        this.setLocation(Toolkit.getDefaultToolkit().getScreenSize().width/2-this.getSize().width/2, Toolkit.getDefaultToolkit().getScreenSize().height/2-this.getSize().height/2);

        int X = 24;
        int Y = 40; 

        final JButton HomeButton = new JButton();
        HomeButton.setFocusPainted(false);
        HomeButton.setBorder(null);
        HomeButton.setContentAreaFilled(false);
        HomeButton.setIcon(new ImageIcon(this.getClass().getClassLoader().getResource("Images/0.png")));
        HomeButton.setRolloverIcon(new ImageIcon(this.getClass().getClassLoader().getResource("Images/0_h.png")));
        HomeButton.setBounds(new Rectangle(X, Y, 50, 50));
        this.contentPane.add(HomeButton);
        HomeButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(final ActionEvent e) {
                try {
                    Desktop.getDesktop().browse(new URL("http://www.google.nl").toURI());
                } catch (IOException | URISyntaxException e1) {
                    e1.printStackTrace();
                }
            }
        });

        Y += 60;

        final JButton ForumButton = new JButton();
        ForumButton.setFocusPainted(false);
        ForumButton.setBorder(null);
        ForumButton.setContentAreaFilled(false);
        ForumButton.setIcon(new ImageIcon(this.getClass().getClassLoader().getResource("Images/1.png")));
        ForumButton.setRolloverIcon(new ImageIcon(this.getClass().getClassLoader().getResource("Images/1_h.png")));
        ForumButton.setBounds(new Rectangle(X, Y, 50, 50));
        this.contentPane.add(ForumButton);

        Y += 60;

        final JButton VoteButton = new JButton();
        VoteButton.setFocusPainted(false);
        VoteButton.setBorder(null);
        VoteButton.setContentAreaFilled(false);
        VoteButton.setIcon(new ImageIcon(this.getClass().getClassLoader().getResource("Images/4.png")));
        VoteButton.setRolloverIcon(new ImageIcon(this.getClass().getClassLoader().getResource("Images/4_h.png")));
        VoteButton.setBounds(new Rectangle(X, Y, 50, 50));
        this.contentPane.add(VoteButton);

        final JButton CloseButton = new JButton();
        CloseButton.setFocusPainted(false);
        CloseButton.setBorder(null);
        CloseButton.setContentAreaFilled(false);
        CloseButton.setIcon(new ImageIcon(this.getClass().getClassLoader().getResource("Images/Close.png")));
        CloseButton.setRolloverIcon(new ImageIcon(this.getClass().getClassLoader().getResource("Images/Close_h.png")));
        CloseButton.setBounds(new Rectangle(875, 0, 27, 28));
        this.contentPane.add(CloseButton);
        CloseButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(final ActionEvent e) {
                System.exit(0);
            }
        });

        final JButton MinimizeButton = new JButton();
        MinimizeButton.setFocusPainted(false);
        MinimizeButton.setBorder(null);
        MinimizeButton.setContentAreaFilled(false);
        MinimizeButton.setIcon(new ImageIcon(this.getClass().getClassLoader().getResource("Images/Minimize.png")));
        MinimizeButton.setRolloverIcon(new ImageIcon(this.getClass().getClassLoader().getResource("Images/Minimize_h.png")));
        MinimizeButton.setBounds(new Rectangle(850, -1, 27, 28));
        this.contentPane.add(MinimizeButton);
        MinimizeButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(final ActionEvent e) {
                setState(Frame.ICONIFIED);
            }
        });

        final JProgressBar ProgressBar = new JProgressBar();
        ProgressBar.setLocation(150, 500);
        ProgressBar.setSize(600, 50);
        ProgressBar.setValue(50);
        getContentPane().add(ProgressBar);

        final JLabel backgroundLabel = new JLabel(new ImageIcon(this.getClass().getClassLoader().getResource("Images/Background.png")));
        backgroundLabel.setBounds(new Rectangle(0, 0, 1000, 563));
        getContentPane().add(backgroundLabel);

        JPanel titleBar = new JPanel();
        titleBar.setBounds(0, 0, 1000, 25);
        contentPane.add(titleBar);


        titleBar.addMouseListener(new MouseAdapter(){
            public void mousePressed(MouseEvent me)
            {
                // Get x,y and store them
                pX=me.getX();
                pY=me.getY();
            }
        });

        titleBar.addMouseMotionListener(new MouseAdapter(){
            public void mouseDragged(MouseEvent me)
            {
                setLocation(getLocation().x+me.getX()-pX,getLocation().y+me.getY()-pY);
            }
        }); 
    }
}