private void makeAndSetTabComponents() {
    final String[] tabTitles = {"Libraries", "Modes", "Tools", "Examples", "Updates"};
    tabLabels = new JLabel[4];

    for (int i = 0; i < 4; i++) {
      final int temp = i;
      tabLabels[i] =
          new JLabel(tabTitles[i]) {
            @Override
            protected void paintComponent(Graphics g) {
              g.setClip(
                  Toolkit.createRoundRect(
                      0, 0, getWidth(), getHeight(), temp == 0 ? 6 : 0, temp == 3 ? 6 : 0, 0, 0));
              super.paintComponent(g);
            }
          };
      tabLabels[i].setForeground(Color.WHITE);
      tabLabels[i].setBackground(new Color(0x2d4251));
      tabLabels[i].setOpaque(true);
      tabLabels[i].setBorder(BorderFactory.createEmptyBorder(6, 6, 6, 6));
      tabLabels[i].setPreferredSize(new Dimension(TAB_WIDTH, TAB_HEIGHT));
      tabLabels[i].setHorizontalAlignment(SwingConstants.CENTER);
      tabLabels[i].setFont(Toolkit.getSansFont(14, Font.BOLD));
      tabbedPane.setTabComponentAt(i, tabLabels[i]);
    }

    updateTabPanel =
        new JPanel() {
          @Override
          protected void paintComponent(Graphics g) {
            g.setClip(Toolkit.createRoundRect(0, 0, getWidth(), getHeight(), 6, 6, 0, 0));
            super.paintComponent(g);
          }
        };
    ;
    updateTabLabel = new JLabel("Updates");
    updateTabLabel.setFont(Toolkit.getSansFont(14, Font.BOLD));
    numberLabel.setVerticalTextPosition(SwingConstants.CENTER);
    numberLabel.setHorizontalTextPosition(SwingConstants.CENTER);
    numberLabel.setFont(Toolkit.getSansFont(14, Font.BOLD));
    numberLabel.setForeground(Color.WHITE);
    updateTabPanel.setOpaque(true);
    updateTabPanel.setBackground(new Color(0x2d4251));
    updateTabLabel.setForeground(Color.WHITE);
    updateTabPanel.setBorder(BorderFactory.createEmptyBorder(6, 6, 6, 6));
    updateTabPanel.setPreferredSize(new Dimension(TAB_WIDTH, TAB_HEIGHT));
    tabbedPane.setTabComponentAt(4, updateTabPanel);

    GroupLayout tabLayout = new GroupLayout(updateTabPanel);
    tabLayout.setAutoCreateGaps(true);
    updateTabPanel.setLayout(tabLayout);
    tabLayout.setHorizontalGroup(
        tabLayout
            .createSequentialGroup()
            .addPreferredGap(
                LayoutStyle.ComponentPlacement.RELATED, GroupLayout.PREFERRED_SIZE, Short.MAX_VALUE)
            .addComponent(updateTabLabel)
            .addComponent(numberLabel)
            .addPreferredGap(
                LayoutStyle.ComponentPlacement.RELATED,
                GroupLayout.PREFERRED_SIZE,
                Short.MAX_VALUE));
    tabLayout.setVerticalGroup(
        tabLayout
            .createParallelGroup(GroupLayout.Alignment.CENTER)
            .addComponent(numberLabel)
            .addComponent(updateTabLabel));

    numberLabel.setVisible(false);
  }