A simple JPanel with a border and a title : Panel « Swing Components « Java

A simple JPanel with a border and a title


 *  Copyright (C) 2004 Kai Toedter
 *  kai@toedter.com
 *  www.toedter.com
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public License
 *  as published by the Free Software Foundation; either version 2
 *  of the License, or (at your option) any later version.
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  GNU Lesser General Public License for more details.
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//package com.toedter.components;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Paint;

import javax.swing.BorderFactory;
import javax.swing.Icon;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.border.Border;

 * A simple JPanel with a border and a title
 * @author Kai Toedter
 * @version $LastChangedRevision: 85 $
 * @version $LastChangedDate: 2006-04-28 13:50:52 +0200 (Fr, 28 Apr 2006) $
public class JTitlePanel extends JPanel {
  private static final long serialVersionUID = 9104873267039717087L;
  protected JPanel northPanel;
    protected JLabel label;
     * Constructs a titled panel.
     * @param title the title
     * @param content the JComponent that contains the content
     * @param outerBorder the outer border
    public JTitlePanel(String title, Icon icon, JComponent content, Border outerBorder) {
        setLayout(new BorderLayout());

        label = new JLabel(title, icon, JLabel.LEADING);

        GradientPanel titlePanel = new GradientPanel(Color.BLACK);
        titlePanel.setLayout(new BorderLayout());
        titlePanel.add(label, BorderLayout.WEST);
        int borderOffset = 2;
        if(icon == null) {
          borderOffset += 1;
        titlePanel.setBorder(BorderFactory.createEmptyBorder(borderOffset, 4, borderOffset, 1));
        add(titlePanel, BorderLayout.NORTH);
        JPanel northPanel = new JPanel();
        northPanel.setLayout(new BorderLayout());
        northPanel.setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));
        add(northPanel, BorderLayout.CENTER);

        if (outerBorder == null) {
        } else {
    public void setTitle(String label, Icon icon) {
    private static class GradientPanel extends JPanel {
    private static final long serialVersionUID = -6385751027379193053L;

    private GradientPanel(Color background) {

        public void paintComponent(Graphics g) {

            if (isOpaque()) {
                // Color controlColor = UIManager.getColor("control");
                // Color controlColor = new Color(252, 198, 82);
                Color controlColor = new Color(99, 153, 255);
                int width = getWidth();
                int height = getHeight();

                Graphics2D g2 = (Graphics2D) g;
                Paint oldPaint = g2.getPaint();
                g2.setPaint(new GradientPaint(0, 0, getBackground(), width, 0,
                g2.fillRect(0, 0, width, height);


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