40 Java Collections Interview Questions and Answers

Java Collections Framework are the fundamental aspect of java programming language. It’s one of the important topic for java interview…

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Java Thread Pool Example using Executors and ThreadPoolExecutor

A thread pool manages the pool of worker threads, it contains a queue that keeps tasks waiting to get executed.…

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Java Deadlock Example – How to analyze deadlock situation

Deadlock is a programming situation where two or more threads are blocked forever, this situation arises with at least two…

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Java Annotations Tutorial with Custom Annotation

Java Annotations provide information about the code and they have no direct effect on the code they annotate. In this…

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Java Regular Expression Tutorial with Examples

When I started my career in java, regular expressions were a nightmare for me. This tutorial is aimed to help…

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Rest using Jersey – Complete Tutorial with JAXB, Exception Handling and Client Program

Recently I started working on a Restful web service project using Jersey API. There are some tutorials available online but…

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Generate QR Code image from Java Program

If you are tech and gadget savvy, then you must be aware of QR codes. You will find it everywhere…

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How to Avoid ConcurrentModificationException when using an Iterator

Java Collection classes are fail-fast which means that if the Collection will be changed while some thread is traversing over…

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Understanding and Extending Java ClassLoader

The Java ClassLoader is one of the crucial but rarely used components of Java in Project Development. Personally I have…

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