java

The Pants build system alvin December 7, 2017 - 11:11am

I haven’t tried it yet, but Pants is a build system that supports Scala and Java projects (and other languages).

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 syntax is similar to that.)

Android: How to send a message from a Thread to a Handler

As a quick example of how to use a Thread with a basic Handler in an Android application, the following code creates a view where the text in the TextView is updated to show the current date and time when the Button is tapped.

Java source code

First, here’s the Java source code for a file class named ThreadHandlerActivity:

Example: How to use javapackager to build a MacOS application bundle

Table of Contents1 - Building a MacOS application bundle with javapackager2 - The longer story3 - The Mac/Java class4 - The three scripts5 - javapackager notes

I recently learned how to use the Java javapackager command to build a macOS application bundle — i.e., a regular macOS application — from a Java application. In this tutorial I’ll show how to create a Mac application bundle from a simple Java class, in this case a Java Swing class.