HI,

You can use Apache HttpClient 4.5.6 client to develop Java program that interacts with the HTTP server.

Here is the code of Apache HttpClient 4.5.6 Maven Dependency:

<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.5.6</version>
</dependency>

You can add above code in your pom.xml file. After adding the above maven dependency, maven will download httpclient library in the project.

Thanks