A collection of articles, tutorials and blog entries on various computer technical architecture, hardware and software.
Here’s another nano-blog that will hopefully help someone solve a Tomcat error that I was dealing with today: java.lang.NoSuchMethodException: org.apache.catalina.deploy.WebXml addServlet The problem was that I was deploying catalina.jar within my .... read more
If for whatever reason you want to set the locale in Tomcat you simply need to add two jvm arguments in the catalina.sh file found in the bin directory of the Tomcat installation. I was able to set the default locale for Tomcat to US/en on a Mac running M... read more
There are three common ways to iterate through a Collection in Java using either while(), for() or for-each(). While each technique will produce more or less the same results, the for-each construct is the most elegant and easy to read and write. It doesn... read more
This blog post takes you through the steps you need to take to get your Java artifacts (Jars, JavaDocs, Sources, etc.) uploaded to Maven Central. In a nutshell, the main steps are required: 1) Create your JIRA account and create a new project ticket decla... read more
To get the day of the week from a java.util.Date object, we can use the java.text.SimpleDateFormat class. First, create a Date object. Next, create a SimpleDateFormat instance using the getDateInstance() method, passing the String “E” or ̶... read more
In order to deal with the amount of different projects Knowm Inc. is currently managing, both open source and commercial, we jumped at the opportunity to move all of our OSS projects over from an in-house Jenkins CI to a free hosted Travis CI service. Doi... read more
Here we show how easy it is to set up port forwarding (80 to 8080) on Mac OSX using ipfw from the Terminal. IPFW is the built-in firewall of Mac OSX, and we can quickly set up a firewall rule to allow port forwarding. The ipfw command is deprecated in OS ... read more
To convert an array into a java.util.LinkedList we can use the java.util.Arrays class’s asList() method. The Arrays class in the java.util package provides a utility method to convert an array to a List. The Arrays.asList() method will convert an ar... read more
You can upload any type of file to your Google Drive account and, as of this writing, the storage limit is 15GB. After uploading the file, you can set permissions to define who is allowed to also view and download the file. Alternatively, you can create a... read more
As part of Xeiam’s Datasets open source project, we’ve built a basic WAV audio file explorer which displays the spectrogram and waveform of ten second audio clips of birdsong from the HJA Birdsong machine learning dataset. Since this project i... read more