JAX-RS_ in intellij

 Create project with java enterprise. Project template as web application

next,#

In specification selecti RESTful web services(JAX-RS). 

Create the project:

Add the maven framework if needed.

Add this dependencies:

<dependency>
    <groupId>org.glassfish.jersey.containers</groupId>
    <artifactId>jersey-container-servlet</artifactId>
    <version>${jersey.version}</version>
</dependency>
<dependency>
    <groupId>org.glassfish.jersey.inject</groupId>
    <artifactId>jersey-hk2</artifactId>
    <version>${jersey.version}</version>
</dependency>

Add this properties:

<jersey.version>2.29.1</jersey.version>

In webapp/WEB-INF/web.xml, add

<servlet>
    <servlet-name>API Root</servlet-name>
    <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>

    <init-param>
        <param-name>jersey.config.server.provider.packages</param-name>
        <param-value>com.example</param-value>  <!-- TODO: replace this with your own groupId -->
    </init-param>
</servlet>
<servlet-mapping>
    <servlet-name>API Root</servlet-name>
    <url-pattern>/api/*</url-pattern>  <!-- TODO: replace this with your own prefered path -->
</servlet-mapping>

param-value as your package name.

http://localhost:8080/RESTFul_Messenger_war_exploded/api/hello-world

Good to go...........