Whilst developing an application the other day I wanted to create a repeating task. Looking around for a solution I came across the Timer and TimerTask classes. These two classes in combination looked like a perfect solution to my problem. It was only when I came to implement my solution I noticed something about how they work. Continue reading “Using Java Timer to build a countdown timer”
When you write an application you set out to make it work. However, quite often once an application is deployed in the field you can encounter problems. Having a log file that can help you trace where the problem lies can be an invaluable tool. Continue reading “Configure Log4J2 with properties file”
This tutorial takes a look how authentication works within an application, particularly how passwords are secured in an encrypted manner. This example uses a home built system so that you can see the mechanisms used to securely store passwords. Continue reading “Adding encrypted authentication to your application”
Using a text file to hold configurable values for your application is a great way to provide flexibility without needing to re-compile your code. This tutorial takes you through how to add a properties file to your Java desktop application.
If your java desktop application needs to store data in a database then a good solution is to embed a database into your solution. This tutorial takes you step by step through embedding an SQLite database into your Java desktop application. Continue reading “Java with SQLite embedded database”
JTree is a swing class used to display a tree like structure such as the file directory structure. If we want to create a JTree we could simply call any one of a number of constructors and it would give us a JTree. To demonstrate the point Continue reading “Getting started with JTree”
This tutorial runs through how to change information displayed based on selecting a JTree node. As each tree node is selected the information displayed on the right changes.
The challenge in this tutorial is to present a mathematical formulas written in LaTeX within our application. This example makes use of the third party library “JLaTeXMath – A Java API to render LaTeX” Continue reading “Math Formula in Java”
Checking the version of Java, downloading and installing the Java Standard Edition Run Time Environment (JRE). Continue reading “Installing Java”
In this tutorial we will take a look at displaying JTree information in a hierarchy. We will introduce the Tree Node object that works alongside JTree. As we go through the tutorial we will see how the Tree Node handles the tree data and the JTree takes care of displaying the information. Continue reading “Using JTree to display a hierarchy”