Here is Why You Need to Learn Java for Hadoop Jobs

Hadoop projects slowly coming to all big companies. This is the time you to refresh your skills, and try for good career opportunities. Many programmers including Mainframe developers asked this question that the suitable course. The answer is learning basic java is highly useful to learn Hadoop and Big data related courses.

I would like to share the best Java skills for Hadoop development. When you get some hands on experience on Core Java then you can learn any skills.

The below are the complete list of core java course contents that you can learn to advance your IT career.

Introduction to Java programming

  • The Java Virtual Machine
  • Variables and data types
  • Conditional and looping constructs
  • Arrays

Object-oriented programming with Java Classes and Objects

  • Fields and Methods
  • Constructors
  • Overloading methods
  • Garbage collection
  • Nested classes


  • Overriding methods
  • Polymorphism
  • Making methods and classes final
  • Abstract classes and methods
  • Interfaces

Exception handling with try-throw-catch-finally constructs

  • The Exception class

The Object class

  • Cloning objects
  • The JDK LinkedList class
  • Strings
  • String conversions

Working with types: Wrapper classes

  • Enumeration interface


  • Package access
  • Documentation comments


  • Configuring applets
  • Applet capabilities and restrictions TECHNOLOGIES

Basics of AWT and Swing

  • Layout Managers
  • Event Handling
  • The Action Listener interface
  • Panels
  • Classes for various controls, such as label, choice, list,
  • Checkbox, etc.
  • Dialogs and frames
  • Using menus
  • Using the adapter classes
  • Graphics


  • Synchronization

 The I/O Package

  • InputStream and OutputStream classes
  • Reader and Writer classes

Basic concepts of networking

  • Working with URLs
  • Concepts of URLs
  • Sockets

Database connectivity with JDBC

  • Java security

Related: Complete Hadoop Interview Questions

Author: Srini

Experienced software developer. Skills in Development, Coding, Testing and Debugging. Good Data analytic skills (Data Warehousing and BI). Also skills in Mainframe.