Author: Arpit Mandliya

In this quick tutorial, how to create String constants using enum, convert String to enum etc. You can go though complete enum tutorial here. Let’s create java enum String constants. Create java enum String [crayon-66497cc343f1e699642930/] That’s pretty simple. Access enum by name You can simply use . operator to access enum but if you have […]

The Hadoop ecosystem is going through the continuous evolution. Its processing frameworks are also evolving at full speed with the time. Hadoop 1.0 has passed the limitation of the batch-oriented MapReduce processing framework for the development of specialized and interactive processing model which is Hadoop 2.0. Apache Hadoop was introduced in 2005 and taken over […]

The heart of Apache Hadoop is Hadoop MapReduce. It’s a programming model used for processing large datasets in parallel across hundreds or thousands of Hadoop clusters on commodity hardware. The framework does all the works; you just need to put the business logic into the MapReduce. All the work is divided into the small works […]

In this tutorial, we will see  about Collections in java. Collection framework is core part of java programming language. It is used in almost all the applications. Collections framework provides a way to store and retrieve the collection of elements. This framework has many interfaces and classes which makes programmer life easy. Let’s go through […]

Introduction In this post we will look into the most commonly asked Interview questions related to Java. We will take a look at the most common topics in Java for interviews and provide the answer to the questions in detail with examples to help you ace your next interview. We recommend following this post step […]

In this post, we will see about Java 8 tutorial. I have written a lot of tutorials on Java 8. This is index post for all Java 8 posts. Java 8 has lots of new features which will change the way you do programming. Here is a list of features you need to know to […]

In this post, we will see about Java 8 optional. Did you ever get NullPointerException as Java developer? If you are experienced Java developer, you might have got NullPointerException at some point of time. You might agree that NullPointerException is pain for novice or expert core Java developer. You have to put a lot of […]

The Hadoop Distributed File System is a java based file, developed by Apache Software Foundation with the purpose of providing versatile, resilient, and clustered approach to manage files in a Big Data environment using commodity servers. HDFS used to store a large amount of data by placing them on multiple machines as there are hundreds […]

Hadoop HBase is based on the Google Bigtable (a distributed database used for structured data) which is written in Java. Hadoop HBase was developed by the Apache Software Foundation in 2007; it was just a prototype then. Hadoop HBase is an open-source, multi-dimensional, column-oriented distributed database which was built on the top of the HDFS. […]