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Java Generics Interview Questions

Generic interview questions in Java interviews are getting more and more common with Java 5 around there for considerable time and many application either moving to Java ...
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How to analyze Thread Dump – Thread Stack Trace

This article is part 5 of our Thread Dump analysis series. So far you have learned the basic principles of Threads and their interactions with your Java EE container & JVM. You ...
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Catch a StackOverFlowError by it’s tail

One of the more annoying situations you might have to deal with when working with a Java program is a StackOverFlowError, if you have a nice producible test case then there are few ...
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Concurrency – Sequential and Raw Thread

I worked on a project a while back, where the report flow was along these lines:User would request for a report The report request would be translated into smaller ...
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Demeter Law

Hello, how are you?Let us talk today about the Demeter Law. It is a pattern of Object Orientation that helps us to lower our coupling, decrease our maintenance impact and ...
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Chain of Responsibility Pattern in Java

Chain of Responsibility design pattern is needed when a few processors should exist for performing an operation and a particular order should be defined for those processors. Also the ...
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Bye, Bye, 5 * 60 * 1000 //Five Minutes, Bye, Bye

In this post I am going to talk about one class that was first introduced in version 1.5, that I have used too much but talking with some people they said that they didn’t know ...
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Apache Commons SCXML: Finite State Machine Implementation

This article mentions about Finite State Machines (FSM), SCXML ( State Chart extensible Markup Language) and Apache Common’s SCXML library. A basic ATM finite state machine sample ...
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Java concurrency – Feedback from tasks

Picking up from where I left off in my last post about the java.util.concurrent package, it’s interesting and sometimes mandatory to get feedback from concurrent tasks after they ...
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JRockit – JRCMD useful commands

I have been using JRockit since many years 2007. I find it slower than Hotspot, but it has been always better on diagnosis and analysis of problems. Since last summer, I have been working ...
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