Difference between Abstract Class and Interface in java

Some of the popular interview questions are “What are the differences between abstract class and interface”, “When will you use…

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How HashMap works in java

Most common interview questions are “How HashMap works in java”, “How get and put method of HashMap work internally”. Here…

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Externalizable in java

Before understanding Externalizable interface, you need to have idea about Serialization.You can read more about Serialization at Serialization in java.…

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Serialization in java

Java provides mechanism called serialization to persists java objects in a form of ordered or sequence of bytes that includes…

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Template method design pattern in Java

Template method pattern is a behavioral design pattern which provide base method for algorithm,called template method which defers some of…

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Difference between Comparator and Comparable in Java

One of the common interview question is ‘What are differences between Comparator and Comparable’. or ‘How will you sort collection…

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Observer design pattern in Java

As the name suggests it is used for observing some objects.Observer watch for any change in state or property of…

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JAXB tutorial – Getting Started

Note: Check out our JAXB Tutorial for Java XML Binding – The ULTIMATE Guide What is JAXB? JAXB stands for…

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Hibernate inheritance: Table per class hierarchy

In this tutorial we will see how to implement inheritance in hibernate.There are 3 ways in which you can implement…

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