java

recent posts related to java, jdbc, spring, etc.

A Java Month class (that can be used in a calendar application)

Summary: A Java Month class that you can use in Java calendar applications.

I was just cleaning up some old bits, and ran across a Java Month class that I've used on several calendar-related projects. If you happen to be working on a Java calendar application, and need a class to represent the months in a year, this source code may be helpful, so I thought I'd share it here.

Java Month class source code

Without any further ado then, here is the source code for this Java Month class:

By Alvin Alexander on October 17, 2012

Java, ProGuard, and Ant - How to obfuscate Java class files with ProGuard

Java obfuscator/obfuscation FAQ: How can I obfuscate my Java class files so they can't easily be decompiled? (Or, how do I use ProGuard to obfuscate my Java class files?)

By Alvin Alexander on October 17, 2012

Java sound - A command line Java program to play a sound file (in headless mode)

As part of my ongoing HAL 9000 voice obsession, I downloaded a bunch of "HAL 9000" sound files last night. But, when you double-click a sound file on Mac OS X, it automatically plays through iTunes, which is good for some things, but bad for what I wanted to do. So, I wrote a quick little "Java sound" program to read the name of a sound file from the command line, and then play the sound file.

By Alvin Alexander on October 17, 2012

A Java text area with a background image (watermark image)

Java image FAQ: How can I place an image in the background of a Java text component, such as creating a background image for a JTextArea, JTextPane, or JEditorPane? (i.e., How do I create a Java background or watermark image.)

By Alvin Alexander on May 3, 2013

A Java Active Directory JAAS example

I normally don't like to put source code out here that I can't support, but in this case I thought I'd make an exception, because I remember a former co-worker having a really hard time getting this Java Active Directory JAAS code working properly. It's been over two years since I got it working for him, so I don't remember what the problems were. Hopefully if you're trying to get Java working with Active Directory (using JAAS), this example source code will get you pointed in the right direction.

By Alvin Alexander on October 17, 2012

A Java FileFilter example

Summary: A Java FileFilter example, including a complete implementation of a Java FileFilter class.

I don't have much time for discussion today, but here's the source code for a Java FileFilter example I created in a text editor I wrote named "Jelly":

By Alvin Alexander on October 17, 2012

A Java True License example - Part 1, the Software License Server

Summary: I'm sharing my Java True License client and server source code. This code is taken from a Java/Swing software application which I successfully licensed and sold using the True License software library.

By Alvin Alexander on October 17, 2012

Nagios web interface, coming soon

I'm not sure how much call there is for a simplified Nagios web interface (user interface), but I wrote one last year, and I'll be releasing it here soon, after many comments on my Nagios MySQL database design article, along with many, many personal emails.

By Alvin Alexander on October 17, 2012

A Spring MySQL BasicDataSource connection example

Spring MySQL FAQ: Can you share a Java Spring MySQL example, showing how to create a Spring Framework application context file so a Java standalone application can connect to a MySQL database?

Sure, here's a Java/Spring MySQL example, specifically showing a Spring application context file that sets up a BasicDataSource (connection) to let your Java application connect to a MySQL database.

The Spring MySQL application context file

Here's the source code for the Spring MySQL application context file (which I named applicationContext.xml):

By Alvin Alexander on April 25, 2013

A Java MySQL DELETE example

Summary: A Java MySQL DELETE example, demonstrating how to issue a SQL DELETE command from your Java source code.

By Alvin Alexander on April 25, 2013