Building real-time chat app using WebSockets with AWS API Gateway and Lambda
We can build many real-time applications such as chat applications, multiplayer games, financial trading platforms, and collaboration platforms using WebSockets with AWS API Gateway, Lambda, and dynamoDB. In this blog we will learn how to build real-time applications using WebSockets
SCEA 5 – My 2 cents
I recently became SUN certified Enterprise Architect after clearing all 3 parts of SCEA. It is hard to get answers to all questions one may have regarding SCEA but SCEA forum on javaranch.com is great!! I have shared my experience
Tomcat – java.lang.Unsupported Class Version Error: Bad version number in .class file
This is because your class files were compiled with a Java compiler not compatible with JVM in use within tomcat. If you compiled on the same machine on which you have tomcat running, you must be having 2 JDKs (or
Javascript – extract Year from Date
If you want to extract the year from Date in Javascript, try getFullYear() method instead of getYear(), see the output below on Firefox and Chrome: Here’s the code: <html> <head> <script langauge=”javascript”> var date1 = new Date(); var browser =
MuleStudio – No option to Create New Mule Project
installed MuleStudio community edition on Ubuntu 11.04. MuleStudio was starting but showed no option to create new Mule Project. Since I have multiple versions of JDK installed, so before starting mule studio I was explicitly exporting JAVA_HOME to point to
Online Certifications
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Tomcat – java.lang.UnsupportedClassVersionError: Bad version number in .class file
This is because your class files were compiled with a Java compiler not compatible with JVM in use within tomcat. If you compiled on same machine on which you have tomcat running, you must be having 2 JDKs (or a
Fatal error: Allowed memory size of 16777216 bytes exhausted
You need to change the maximum memory allowed to a php script to run. For this you need to open your php.ini (location of this file will depend on where php is installed on your machine). In my case php.ini