Tutorials





Asynchronous Servlet

Asynchronous Servlet was introduced in Servlet 3.0, and enhanced in Servlet 3.1 version as part of Java EE 7. Here we will discuss an example which depicts how asynchronous servlet works and how useful it is.… [Read More]




Lock unlocked : Decode the Lock class

"Lock implementations provide more extensive locking operations than can be obtained using synchronized methods and statements. They allow more flexible structuring, may have quite different properties, and may support multiple associated Condition objects"… [Read More]


What's next in Java & What makes Java next gen

If you are looking for what's next in Java/JEE. If you are done with Struts and JSF, looking for if I still need to use raw JEE instead of Spring. And you are thinking of from Java to JEE. Then you still need to see what probably have not seen yet in Java.… [Read More]


How to handle security in Java/J2EE applications

I got inspiration to write this post because I face some questions over security, and at times we are not ready with all points to present on how to handle security - since its a big topic and will include concepts and layers.… [Read More]

When we are writing Java/J2ee programs, we are aware that our program would run inside a multithreaded environment,… [Read More]

IN Java, Memory Management means Garbage Collection and memory allocation. Memory allocation is very small process as compared to Garbage Collection,… [Read More]


Garbage Collection Algorithm - JDK Implementation

There are several basic strategies for garbage collection: reference counting, mark-sweep, mark-compact, and copying. In addition,… [Read More]


JMS Prevent Message Loss

Its a common question that comes in mind while dealing with JMS. How to guarantee, there is no message loss? Also how to secure message delivery, or guarantee message delivery,… [Read More]

Web Services Reliable Messaging (WSRM) is a specification that allows two systems to send messages between each other reliably,… [Read More]


WebSphere Application Server Profile, Cell, Node, Application Server Basic

WebSphere Application Server is a key SOA building block. We can build a complete SOA application only using WAS,… [Read More]


WebSphere Application Server Messaging

Messaging is a way to exchange data between different applications. Several applications deployed over WAS can exchange information,… [Read More]


Prevent Message Loss in Message Driven Bean

Message Driven Bean(MDB) is a stateless, transaction aware J2EE component for consuming messages asynchronously,… [Read More]


Prevent Message Loss in Message Driven Bean deployed in WebSphere Application Server

This is small setting in WAS to prevent message loss upto some extent,… [Read More]


Unit Testing EJB using EJB3UNIT

Unit Testing EJB is something that not everyone needs. EJB is so much container managed, and has been around for a long time. But no one can skip the Unit Testing,… [Read More]

I am taking a scenario, where an Application thread starts a transaction, perform operation on two different resources( for eg., JDBC, and JMS), and finnaly commits the transaction,… [Read More]


JMS Administered Objects in IBM MQ

WebSphere MQ, Version 7.0 integrates JMS configuration into its graphical, Eclipse-based tool, MQ Explorer, making it easier to design and deploy JMS solutions,… [Read More]


Struts1 vs. Struts2 – Difference between Struts1 and Struts2

What is the difference between Struts1 and Struts2,… [Read More]


CORBA - Calling CORBA using IOR - Java Code

"The Common Object Requesting Broker Architecture (CORBA) is a standard defined by the Object Management Group (OMG) that enables software components written in multiple computer languages and running on multiple computers to work together." ,… [Read More]


Sun Certification - Is it Worth ?

I have three Java certificates: SCJP, SCWCD, and SCBCD.,… [Read More]

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