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Data Structures

Introduction to Stack Data Structure in Java

Stack is an abstract data type. Stack can be implemented using Linked List or Array. It follows LIFO principle (Last In First Out) and supports push(), pop() and peek() operations. Stack operations For this explanation, let’s consider that we implement Read more…

By Vignesh M, 5 days5 days ago
Data Structures

ArrayList in Java

ArrayList is one of the implementation of the List interface. It is internally a resizable-array under the hood. ArrayList is equivalent to Vector but the only difference is it is not synchronized. ArrayList uses Array internally to store the data. Read more…

By Vignesh M, 2 months ago
Data Structures

Array Data Structure in Java

An Array is a data structure to store elements of same type. Each element can be accessed by index. Hence random access is possible using Array. Arrays can be of any dimensions. Single and two dimensional arrays are commonly used. Read more…

By Vignesh M, 2 months2 months ago
Amazon EBS

Automate your Amazon EBS Snapshot Creation and Deletion using EBS Lifecycle Manager

AWS provides an option to take snapshots of the EBS volume. EBS snapshots come handy when we want to recover our EBS volumes from any unforeseen disasters or failures. It would be even nice if you can automate your Amazon Read more…

By Vignesh M, 2 months2 months ago
Database

Oracle flashback query to the rescue

In this post, I would like to mention one of the feature of oracle database i.e Oracle flashback query. Recently we as a team involved in the activity of bad data correction. One fine day, for some bug in the Read more…

By Vignesh M, 4 months4 months ago
Spring framework

Secure your Spring REST API using OAuth2

In this post, let’s see the techniques about securing the Spring REST API using OAuth2. We will start by building an Authorization server to generate OAuth2 tokens. Then we will build our REST API which is the resource server. Finally, Read more…

By Vignesh M, 6 months6 months ago
Amazon Web Services

Integrate Spring Boot With Amazon DynamoDB

In this post, let’s see how to integrate Spring Boot with Amazon DynamoDB. I have been exploring the option of creating the REST API using Spring Boot backed by DynamoDB. I will share the information that I have learned during Read more…

By Vignesh M, 9 months ago
Spring framework

Spring Boot – Hello World Example

Spring Boot is developed by Pivotal Software to make the applications development easier. With Spring Boot we can create stand-alone, production-grade applications easily with minimum configuration. In this post, let’s see how to build a simple REST API endpoint using Read more…

By Vignesh M, 10 months9 months ago
Core Java

Introduction to Java 9 modules with example

Java 9 is a major feature release of the Java platform and the key features include Java Platform Module System(JPMS), Java Shell and lot of improvements to JVM and core libraries. In this post, let’s have a look at the Read more…

By Vignesh M, 1 year1 year ago
Angular

Reactive forms validation in Angular

Angular is a framework which makes the web applications development easier. Recently I have been exploring the Angular to build a single page application(SPA). When doing so, I came across a need to build a form which takes the user Read more…

By Vignesh M, 1 year1 year ago

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Recent Posts
  • Introduction to Stack Data Structure in Java
  • ArrayList in Java
  • Array Data Structure in Java
  • Automate your Amazon EBS Snapshot Creation and Deletion using EBS Lifecycle Manager
  • Oracle flashback query to the rescue
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