Java

Hibernate sessions and effective batch update

I am discussing some key concepts and their applications that needs to be understood to implements effective batch update in Hibernate. This is not a tutorial and I am presenting the aspects that I keep in mind while implementing batch update using…

How to use different Maps in Java

Here I will be talking about HashMap, HashTable and TreeMap, all of which implement the Map interface

To start with, HashMap and HashTable both implements Map interface and looks similar, however there are significant differences between their…

Concurrent Collections in Java

The Java collection classes provides a wide range of classes and interfaces that makes our life simple and our code elegant.

However, most of these classes are not thread-safe and one must be careful while implementing them in a multi-threaded…

Interface vs Abstract Class

A class must be declared abstract when it has one or more abstract methods. A method is declared abstract when it has a method heading, but no body — which means that an abstract method has no implementation code inside curly braces like normal methods do.

‘Context’ in Java Applications

If you have programmed in java and developed web applications, you must have noticed the context object. Even though I know the meaning, I have always wondered its interpretation in programming. Here is a beautiful writeup about it I found in StackOverFlow by this guy named…

Java important methods— equals(), hashCode() and compareTo()

Today, I am just writing up on three very important methods that are often used together for sorting and comparison on different Java collections.

equals()

Java Concurrency Notes

In this article, I intent to visit some of the basic concepts behind Java concurrency model and understand their proper usage. For this, it is important to understand the terminologies. Hence, I will start-off by breaking down the difference and explaining the underlying concept behind…