Label with tooltip : JToolTip « Swing « Java Tutorial






/*
 * Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Sun Microsystems nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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 */

import java.awt.GridLayout;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;

/*
 * LabelDemo.java needs one other file: images/middle.gif
 */
public class LabelDemo extends JPanel {
  public LabelDemo() {
    super(new GridLayout(3, 1)); // 3 rows, 1 column
    JLabel label1, label2, label3;

    ImageIcon icon = createImageIcon("images/middle.gif",
        "a pretty but meaningless splat");

    // Create the first label.
    label1 = new JLabel("Image and Text", icon, JLabel.CENTER);
    // Set the position of its text, relative to its icon:
    label1.setVerticalTextPosition(JLabel.BOTTOM);
    label1.setHorizontalTextPosition(JLabel.CENTER);

    // Create the other labels.
    label2 = new JLabel("Text-Only Label");
    label3 = new JLabel(icon);

    // Create tool tips, for the heck of it.
    label1.setToolTipText("A label containing both image and text");
    label2.setToolTipText("A label containing only text");
    label3.setToolTipText("A label containing only an image");

    // Add the labels.
    add(label1);
    add(label2);
    add(label3);
  }

  /** Returns an ImageIcon, or null if the path was invalid. */
  protected static ImageIcon createImageIcon(String path, String description) {
    java.net.URL imgURL = LabelDemo.class.getResource(path);
    if (imgURL != null) {
      return new ImageIcon(imgURL, description);
    } else {
      System.err.println("Couldn't find file: " + path);
      return null;
    }
  }

  /**
   * Create the GUI and show it. For thread safety, this method should be
   * invoked from the event dispatch thread.
   */
  private static void createAndShowGUI() {
    // Create and set up the window.
    JFrame frame = new JFrame("LabelDemo");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    // Add content to the window.
    frame.add(new LabelDemo());

    // Display the window.
    frame.pack();
    frame.setVisible(true);
  }

  public static void main(String[] args) {
    // Schedule a job for the event dispatch thread:
    // creating and showing this application's GUI.
    SwingUtilities.invokeLater(new Runnable() {
      public void run() {
        // Turn off metal's use of bold fonts
        UIManager.put("swing.boldMetal", Boolean.FALSE);

        createAndShowGUI();
      }
    });
  }
}








14.72.JToolTip
14.72.1.Adding JToolTip to componentAdding JToolTip to component
14.72.2.Creating HTML 3.2 formatted text tooltip: the text string begins with 'html' in any caseCreating HTML 3.2 formatted text tooltip: the text string begins with 'html' in any case
14.72.3.Creating Customized JToolTip Objects: customize and override its inherited public JToolTip createToolTip()
14.72.4.Displaying Positional Tooltip Text: display different tooltip depending on the mouse pointer's location
14.72.5.Displaying Mnemonics in tooltip textDisplaying Mnemonics in tooltip text
14.72.6.Label with tooltip
14.72.7.Use images in tooltips
14.72.8.Make a tool tips appear immediately
14.72.9.Use the default tool tip location
14.72.10.Setting the Location of a Tool Tip
14.72.11.Enabling and Disabling Tool Tips
14.72.12.Showing an Image in a Tool Tip
14.72.13.Italicize the second line
14.72.14.By default, the lines are left justified. Center the lines.
14.72.15.Showing Multiple Lines in a Tool Tip
14.72.16.Disable / enable application tool tips
14.72.17.Making Tool Tips Remain Visible
14.72.18.Set the location of the tool tip such that its nw corner coincides with the bottom center of the button
14.72.19.Modify the behaviour of the default JToolTip
14.72.20.Customizing a JToolTip Look and Feel