AWT Section Index | Page 4

You seem to think that a new thread is created for each image you download. That's simply not the case. Most AWT implementations use a small pool of threads (usually 4) for downloading images. The...more

For a java.applet.Applet, the default layout manager is FlowLayout. For the content pane of a javax.swing.JApplet, the default layout manager is a BorderLayout.

BoxLayout respects the preferred, maximum and minimum sizes of its managed components. You can manage the sizes in two ways: Subclass your components and override their sizing methods: getPref...more

Printing is done with AWT classes and thus covered in the AWT FAQ. See How do I print a multi-page text document? for one example, though the API has changed with every release of Java.more

You can create your own Label class extending original java.awt.Label class and override the paint method. For example import java.awt.*; public class MyLabel extends Label { public MyLab...more

Call component.getParent();

You can't. You have no control over the display of the AWT components. They use the native widget set (are drawn outside Java).

To get a list of all components in a JFrame, you could need to write a recursive method like the following: public void getAllComponents(Component c, Collection collection) { collection.add(c)...more

Here's something I just knocked up. If you use this example remember to add your main component to the CENTER of the frame's content pane. [FAQ Manager Note] Note that you can have anything you ...more

This happens if you don't have a layout manager set for the components inside the frame. If you use appropriate layout managers, you should see decent results from pack(). For details on using l...more

There are some toolkits that might help with the graph construction. Tom Sawyer's in particular, has some very nice automated graph layout support. http://www.jhotdraw.org/ http://www.tomsawyer....more

You need to explicitly call System.exit(exit_value) to exit a Swing application. This is because the event dispatcher thread is not a Daemon thread, and won't allow the JVM to shut down when othe...more

See my article on layout management, Effective Layout Management. http://developer.java.sun.com/developer/onlineTraining/GUI/AWTLayoutMgr/index.html The basic idea is that the components state t...more

Call Frame.getFrames() which will return all frames created by the application. Frame[] f = Frame.getFrames(); Frame active = null; for (int i = 0; i < f.lenght; i++) { if (f[i].isActive()...more

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