Passing an anonymous function to SwingUtilities.invokeLater (in Scala)

As a quick note, if you ever need to call the invokeLater of the Java SwingUtilities class in Scala, you can pass it an anonymous function (lambda) like this:

SwingUtilities.invokeLater(() => {
    // your gui-updating code here, such as:
    for (c <- newsControllers) c.updateContent()

(I haven’t worked with Java 8 lambdas too much, but I assume that the Java lambda syntax is similar to that.)

A Java splash screen with a progress bar (Part 1)

In this tutorial I look at how to create a splash screen in a Java application. At the end of the discussion I'll share all of the Java classes that are needed to implement your own Java splash screen.

Java JFrame example: How to display a JFrame

This morning when I saw some Java JFrame code on a mailing list, it made me think that I needed to put a simple JFrame example out here, something that would show how to properly construct and display a JFrame without getting into a discussion of anything else. Here are two examples that show the correct technique.

JFrame color - How to set the JFrame background color

JFrame color FAQ: How do I set the JFrame background color?

In general, to set the JFrame background color, just call the JFrame setBackground method, like this:


Note that there are many more things you can do with the Java Color class, including:

Java JFrame: How to create, center, and display a JFrame

Java JFrame FAQ: How do I properly create and display a JFrame? While you're at it, how do I center a JFrame?

In this Java tutorial I'll demonstrate how to create and display a JFrame Other than the comments in the source code, I'm going to keep the code as simple as possible, so I can demonstrate how this works.

JDialog focus: How to get input focus on a JDialog

I just solved a problem I was having in a Java Swing application getting input focus on a JDialog in a homemade text editor I use on my Mac OS X systems. Using my initial Java code the JDialog was properly getting input focus the first time it was displayed, but it was not properly getting input focus when it was displayed a second (or any subsequent) time.