Java

In this section I have listed all of my posts related to JAVA for both Development and Testing. I am using Eclipse and sometimes IntelliJ. My experience regarding Java
1. Develop/Customize Desktop Application (swing)
2. Function Testing and Framework building with Selenium, Sahi, Robotium.
3. Unit testing for different application & frameworks
4. Using java tools for JVM/System/server performance monitoring,
5. Performance profiling, code review for Middle-ware & Persistence layer.

------------------- Java Language---------------------

How to install JAVA
- Adding path to environment for windows and Linux pc (CentOS)

Java Basics : 
A quick overview on JVM Architecture
How Java gets the classes?
What is java annotation? How it works?Let's make custom annotation.

Unit Testing : 

Compare study : JUnit3 Vs JUnit 4Vs TestNG

Java Thread & Synchronization 

1. Java Thread & Synchronization : How to use thread?

2. Java Thread & Synchronization : Basic introduction.

Java Reflection

1.  What if Reflection? How it works in Java?

->Why we use it and Why we not.

->small performance benchmarks 

2. How to get Class Information with Java Reflection? Interfaces and Super Class

3. How to get Class Info in Java Reflection? Packages and Class Modifier.

4. How to get Class Info in Java Reflection? Class Name and Signer Names

5. How to get all Constructor information under a Class in Java Reflection?

6. How to get all Field info in a Class in Java Reflection?

7. How to get all Method information under a Class in Java Reflection?

---------------Java Platform Engineering-----------------

Java Out of Memory Error simulation. 

Java Run Time error/exceptions:Out of Memory(OOM) What & why?

JVM Exception/Error Example: OutOfMemoryError: Java heap space

OutOfMemoryError :PermGen space or Metaspace Example: JVM Exception/Error

Java OutOfMemoryError :Unable to create new native thread, JVM Exception/Error

Java OutOfMemoryError : GC overhead limit exceeded Example

Java / JVM Troubleshooting 

How to find memory leaks in application? General Ideas

Tool for Offline Java Memory Analysis 

---------------Java / JVM Tools-----------------

Java(JDK) Command Tools

Introduction to Java Command Tools

-java/javaw-The Java Application Launcher Commands
-jar-The Java Archiving Tool
-javac - The Java compiler
-idlj, IDL-to-Java Compiler
-javaws - Java Web Start launcher
-jdb - The Java Debugger
-jrunscript-command line script shell
-jhat - Java Heap Analysis Tool
-jstack-Java Stack Trace
-jmap - Java Memory Map Printer
-jconsole - Java Monitoring and Management Console
-jps - JVM Process Status Tool 
-jstat - Tool for JVM Statistics Monitoring
--Virtual Machine Identifier(VMI)
-- Host Identifier(hostId)
-jstatd -JVM Remote Monitoring(jstat daemon) 
-keytool - Managing Key and Certificate in Java
--How import works for new Trusted Certificate?
--How import works for Certificate Reply?  
-apt-Annotation Processing Tool in Java