JAVA Cambodia

Please find two presentations recently made during Barcamp Phnom Penh last weekend. JavaEE With Server and Client test to illustrate how Java Enterprise works with EJB 3. Find presentation and source at:  https://github.com/JavaCambodia/JavaEE-Sample Vaadin The sample and presentation to illustrate how power of Vaadin for those who has even basic knowledge in Java. Vaadin is about UI which you can code a very nicely interface for business application. You can find the presentation and source at:  https://github.com/JavaCambodia/Vaadin-ContactSystem Community Get in touch together: - Community: at Google+ Community - JavaCambodia @ Slack, to submit here to get invitation to join the chat.

Let's celebrate 20th Birthday of Java programming language and technology. Let's see how from 1995 to 2015 happens to Java via here. This infographic is from the eXo Platform blog:

NIO and NIO2 from Balamurugan Soundararajan Don't forget to read about Tomcat 8 and NIO2, how speed improving from here .

Running Java application requires a lot of memory to load, execute and running. When you run one of the Java application, it does not only your application need memory but the web container such as Tomcat also required. It is more annoyed for you as a developer that you use many development tools that running on JVM such as Maven, Eclipse IDE, Tomcat and other stuffs. The memory firstly is about your RAM, regularly, you might have only 8GB RAM as normal as mine that I though it's enough but usually, it's not. Let's look to your Eclipse, the autocomplete code there, number of Java files and other automatic stuffs you do on the IDE that keeps you slowing everytimes; So that by theory, 8GB still not enough to go. Java heap issue can be solved by setting the right use of the memory as following way: -Xms<size> - Set initial Java heap size -Xmx<size> - Set maximum Java heap size Example: java -Xms512m -Xmx1024m JavaApp But never forget to calculate ho...

Today, Java is driving more than $100 billion of business annually. If we take a look at the enterprise side, more than $2.2 billion are being spent by the enterprises in Java application server. There is no denying that Java is used extensively for developing Java enterprise applications reason being Security. Java brings some of the most fascinating features or benefits that are impossible to find in any other programming languages or platforms. Here is the key features in a short note: Java’s security model No use of pointers Exception handling concept Defined order execution Tested code re-usability Access Control functionality Protection from security attacks Garbage collection mechanism Type-safe reference casting in JVM Full reading from these key features, here

JVM version refers to the installed JRE in your system and if you are in Windows, it should be loaded in System Environment (PATH), it will manage to execute the Java application in your system, especially it will install a plugin to your browsers (IE, Firefox, Chrome etc.). If JVM is not up-to-date, your machine can be hacked through browser such as via Java Applet as example. Make sure you have latest JVM - Test your browser via following link: http://www.java.com/en/download/installed.jsp