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Spring Security


Login Example

LDAP Authentication


Install Maven in Ubuntu

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Servlet Hello World

Servlet Context Tutorial

Servlet Container Tutorial

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Linux & Unix

Linux ps Command

Linux grep Command

Linux Alias Command

Linux SSH Tutorial

Linux FIle & Directory Command

Shell in Linux

Variable in Shell

Basic Unix Command

Unix Question


Compiling & Running Groovy

Groovy Beginners Tutorial

Groovy IDE & Editor Support

Groovy at a Glance

Groovy Optional Typing

Groovy Overriding Operator


Eclipse Beginners Tutorial

Code Cleanup Using Eclipse

Add Tomcat Server to Eclipse

Connect Database using Eclipse

Connect Remote System using eclipse

Eclipse Shortcuts for Java

Node JS

Node JS Network Programming

Event Loop and Asynchronous Non-Blocking in Node JS

ChatBox – A Peer to Peer Chat Application

Simple Chat Application Using Node JS

Getting Started with Express JS

Getting Started with Express JS – Part 2

Getting Started with Express JS – Part 3

Getting Started with Express JS – Part 4

R Programming

R Programming – Data Structures, Basic Statistics, and Plotting

R for Beginners

R-Programming Basics for Data Science


Your First Hadoop Map Reduce Job

SQLifying NoSQL – Are ORM tools relevant to NoSQL?

Different modes of Hadoop

Hadoop Interview Question

Hadoop vs RDBMS : Which one suits your needs?

Some Hadoop Use Cases

Hadoop Architecture

Hadoop Distributed File System

MapR: The Magic Which Drives Hadoop

Hadoop: When to Use it and When not to?

Format aborted in /app/hadoop/tmp/dfs/name

Spring Boot

Spring Boot 2 Microservices Example

Spring Boot 2 Thymeleaf Example

Spring Boot Flyway Example


Getting started with react js

React Lifecycle Hooks


Git Beginners Guide

Code Base

Java Date Format

Java random number

Java Write to File

Java difference between two dates

Create a table in Oracle

Connect to Oracle DB in Eclipse

Connect to MySQL DB

Read File in Java using the scanner

Read a File using BufferedReader

Read a File using BufferedInputStream

Set file permission in Java

Convert Boolean Object to Boolean Primitives

Convert String Object to Byte primitives

Java ArrayList sublist example

Java ArrayList Search Example

Java ArrayList append Collection Example

Java ArrayList add an element at given index example

Java Sort list of Integer or String

How to get Date Fields

How to add or Subtract Date time in Java

Create Excel file in Java using POI

Read Doc file in Java using POI

Read and Write excel in Java using POI

How to create a popup in Android

How to use Java annotation at runtime

Python String Replace

Python String Concatenation

Python Date to String

Python Date Comparison

Date and Time with Python