Java Border designer

import java.awt.BasicStroke;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;

import javax.swing.BorderFactory;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.border.Border;
import javax.swing.border.EtchedBorder;
import javax.swing.border.LineBorder;
import javax.swing.border.StrokeBorder;
import javax.swing.border.TitledBorder;

public  class Main extends JTabbedPane {
  final static Map<String, Color> COLOR_MAP = new TreeMap<>();
  static {//from w w  w . j  av a  2s . co m
    COLOR_MAP.put("Black", Color.BLACK);
    COLOR_MAP.put("Blue", Color.BLUE);
    COLOR_MAP.put("Green", Color.GREEN);
    COLOR_MAP.put("Red", Color.RED);
    COLOR_MAP.put("Gray", Color.GRAY);
    COLOR_MAP.put("Yellow", Color.YELLOW);
    COLOR_MAP.put("White", Color.WHITE);
  }
  final static Border[] BORDERS = new Border[8];
  static {
    BORDERS[0] = BorderFactory.createLineBorder(Color.BLACK);
    BORDERS[1] = BorderFactory.createLoweredBevelBorder();
    BORDERS[2] = BorderFactory.createRaisedBevelBorder();
    BORDERS[3] = BorderFactory.createEtchedBorder(EtchedBorder.LOWERED);
    BORDERS[4] = BorderFactory.createEtchedBorder(EtchedBorder.RAISED);
    BORDERS[5] = BorderFactory.createDashedBorder(Color.BLACK, 4, 4);
    BORDERS[6] = BorderFactory.createStrokeBorder(new BasicStroke(3));
    BORDERS[7] = BorderFactory.createTitledBorder(BORDERS[0], "Titled Border", TitledBorder.LEFT,
        TitledBorder.DEFAULT_JUSTIFICATION);

  }
  final static String[] BORDER_TYPES = { "Line Border", "Lowered Bevel Border", "Raised Bevel Border",
      "Lowered Etched Border", "Raised Etched Border", "Dashed Border", "Stroke Border", "Titled Border" };

  public Main() {

    JPanel borderTab = new JPanel();
    borderTab.setLayout(new FlowLayout(10));

    // Border area
    final JPanel borderArea = new JPanel();
    borderArea.add(new JLabel("DEMO2S.COM"));
    borderArea.setPreferredSize(new Dimension(200, 100));
    borderArea.setBorder(BORDERS[0]);
    // (Right of the border area)
    borderTab.add(borderArea);

    // ComboBox changing the individual borders
    final JComboBox<String> borderComboBox = new JComboBox<>(BORDER_TYPES);

    // Set border when selection changes
    final List<String> borderTypeList = Arrays.asList(BORDER_TYPES);

    borderComboBox.addActionListener(new ActionListener() {
      @Override
      public void actionPerformed(ActionEvent e) {
        String selected = (String) borderComboBox.getSelectedItem();
        int index = borderTypeList.indexOf(selected);
        borderArea.setBorder(BORDERS[index]);
      }
    });

    // ComboBox to change the color on certain borders
    JComboBox<String> colorComboBox = createColorComboBox(BORDERS, borderArea);

    // Place both combo boxes on North and South of Border layout
    JPanel controlsArea = new JPanel(new BorderLayout(5, 5));
    controlsArea.add(borderComboBox, BorderLayout.NORTH);
    controlsArea.add(colorComboBox, BorderLayout.SOUTH);

    // Place controls area in grid cell 0,0 (Left of the border area)
    borderTab.add(controlsArea);

    // place borders tab in tabbed pane
    addTab("Borders", null, borderTab, "Simple Borders");

  }

  private JComboBox<String> createColorComboBox(final Border[] borders, final JPanel borderArea) {

    final JComboBox<String> colorComboBox = new JComboBox<>();
    final DefaultComboBoxModel comboBoxModel = new DefaultComboBoxModel(COLOR_MAP.keySet().toArray());
    colorComboBox.setModel(comboBoxModel);
    colorComboBox.addActionListener(new ActionListener() {

      @Override
      public void actionPerformed(ActionEvent e) {
        Color selected = COLOR_MAP.get(colorComboBox.getSelectedItem().toString());
        Border newColoredBorder = BorderFactory.createLineBorder(selected);
        borders[0] = newColoredBorder;

        newColoredBorder = BorderFactory.createDashedBorder(selected, 4, 4);
        borders[5] = newColoredBorder;

        newColoredBorder = BorderFactory.createStrokeBorder(new BasicStroke(3), selected);
        borders[6] = newColoredBorder;

        newColoredBorder = BorderFactory.createTitledBorder(borders[0], "Titled Border");
        borders[7] = newColoredBorder;

        Border currentBorder = borderArea.getBorder();

        if (currentBorder instanceof LineBorder) {
          borderArea.setBorder(borders[0]);
        } else if (currentBorder instanceof StrokeBorder) {
          StrokeBorder sborder = (StrokeBorder) borderArea.getBorder();
          if (sborder.getStroke().getDashArray() != null) {
            borderArea.setBorder(borders[5]);
          } else {
            borderArea.setBorder(borders[6]);
          }
        } else if (currentBorder instanceof TitledBorder) {
          borderArea.setBorder(borders[7]);
        }
      }
    });
    return colorComboBox;
  }
  public static void main(String[] args) {
    final JTabbedPane c = new Main();
    c.setPreferredSize(new Dimension(409, 204));
    JFrame frame = new JFrame("java2s.com");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    frame.add(c);
    frame.setSize(300, 250);
    frame.setVisible(true);
  }
}