Java ToolTip-Class (Multiline, W

import java.awt.*;import javax.swing.*;import javax.swing.text.*;import javax.swing.plaf.ComponentUI;import javax.swing.plaf.basic.BasicToolTipUI;/* *  Renders ToolTips: *  - with multiple lines *  - autowidth + max. width *  - linewrap *  - uses jTextArea *   *  For ease of use insert the following lines into you Application: *   *      MultiLineToolTipUI.setMaximumWidth(250); *      MultiLineToolTipUI.initialize(); *      javax.swing.ToolTipManager.sharedInstance().setDismissDelay(20000); * *  © Dexter 2008 */public class MultiLineToolTipUI extends BasicToolTipUI {    protected CellRendererPane rendererPane;    private static JTextArea textArea;    private static int maximumWidth = 0;        static MultiLineToolTipUI singleton = new MultiLineToolTipUI();    public static void initialize() {        // don't hardcode class name        String key = "ToolTipUI";        Class cls = singleton.getClass();        String name = cls.getName();        UIManager.put(key,name);        UIManager.put(name,cls);    }    private MultiLineToolTipUI() {        super();    }    public static ComponentUI createUI(JComponent c) {        return singleton;    }    public void installUI(JComponent c) {        super.installUI(c);        rendererPane = new CellRendererPane();        c.add(rendererPane);    }    public void uninstallUI(JComponent c) {        super.uninstallUI(c);        c.remove(rendererPane);        rendererPane = null;    }        /**     *  set maximum width     *  0 = no maximum width     */    public static void setMaximumWidth(int width){        maximumWidth = width;    }    public void paint(Graphics g, JComponent c) {        Dimension size = c.getSize();        textArea.setBackground(c.getBackground());        rendererPane.paintComponent(g, textArea, c, 1, 1,                    size.width - 1, size.height - 1, true);    }    public Dimension getPreferredSize(JComponent c) {        String tipText = ((JToolTip)c).getTipText();        if (tipText == null){            return new Dimension(0,0);        }        textArea = new JTextArea(tipText );        rendererPane.removeAll();        rendererPane.add(textArea );        textArea.setWrapStyleWord(true);        textArea.setLineWrap(false);                if( maximumWidth > 0 && maximumWidth < textArea.getPreferredSize().getWidth()){            textArea.setLineWrap(true);            Dimension d = textArea.getPreferredSize();                d.width = maximumWidth;            d.height++;            textArea.setSize(d);         }         Dimension dim = textArea.getPreferredSize();         dim.height += 1;         dim.width += 1;         return dim;    }    public Dimension getMinimumSize(JComponent c) {        return getPreferredSize(c);    }    public Dimension getMaximumSize(JComponent c) {        return getPreferredSize(c);    }}