#h2 database

Introduction to H2 database

This article provides an introduction to the H2 Java SQL database.  

H2 Database

  H2 is an open source RDBMS written in Java.

It is an in-memory database.

It can be embedded in Java applications or run in the client-server mode.

  Installation

  You can download and add the h2 jar manually from h2database website or use Maven to download it for you.   To download it, refer the following link :

h…

Jersey (JAX-RS) HTTP methods examples on Resources and Sub Resources

In this guide we will learn about implementing HTTP methods like GET, POST, PUT and DELETE using Jersey (JAX-RS). In theory these HTTP methods used for following purposes:

GET: It represents one or a list of resources or sub resources.

POST: It creates a new resource as represented by URI from the request payload.

PUT: It change an existing resource as represented by URI from the request payload.