## Core Java Networking (Part 2) This module contains articles about networking in Java ### Relevant Articles - [Checking if a URL Exists in Java](https://www.baeldung.com/java-check-url-exists) - [Making a JSON POST Request With HttpURLConnection](https://www.baeldung.com/httpurlconnection-post) - [Using Curl in Java](https://www.baeldung.com/java-curl) - [Do a Simple HTTP Request in Java](http://www.baeldung.com/java-http-request) - [Sending Emails with Java](http://www.baeldung.com/java-email) - [Authentication with HttpUrlConnection](https://www.baeldung.com/java-http-url-connection) - [[<-- Prev]](/core-java-modules/core-java-networking)