For full instructions on how to build this code sample from scratch, look at Quickstart: Manage Phone Numbers

• An Azure account with an active subscription. Create an account for free.
• Java Development Kit (JDK) version 8 or above
• Apache Maven
• An deployed Communication Services resource and connection string. For details, see Create a Communication Services resource.

• ./PhoneNumbers/src/main/java/com/communication/quickstart/App.java: contains code for managing phone numbers.
• pom.xml: Project's Project Object Model, or POM.

1. Open an instance of PowerShell, Windows Terminal, Command Prompt or equivalent and navigate to the directory that you'd like to clone the sample to.
2. git clone https://github.com/Azure-Samples/communication-services-java-quickstarts.git
3. With the Communication Services procured in pre-requisites, add connection string in the code at line no 26 String connectionString = "https://<RESOURCE_NAME>.communication.azure.com/;accesskey=<ACCESS_KEY>";.
4. With a purchased number, you can update the capabilities, pass the purchased number in the code at line no 68.
5. You can release a purchased phone number, pass the purchased number in the code at line no 76.

1. Navigate to the directory containing the pom.xml file and compile the project by using command mvn compile.
2. Then, build the package using command mvn package.
3. Run the command to execute the app mvn exec:java -D"exec.mainClass=com.communication.quickstart.App" -D"exec.cleanupDaemonThreads=false".