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Chapter 3. Getting started

This chapter guides you through the steps to set up your environment and run a simple messaging program.

3.1. Prerequisites
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  • You must complete the installation procedure for your environment.
  • You must have an AMQP 1.0 message broker listening for connections on interface localhost and port 5672. It must have anonymous access enabled. For more information, see Starting the broker.
  • You must have a queue named hello-world-example. For more information, see Creating a queue.
  • Alternatively, you can specify above information using following environment variables: HOST, PORT, ADDRESS

The Hello World example creates a connection to the broker, sends a message containing a greeting to the hello-world-example queue, and receives it back. On success, it prints the received message to the console.

  1. Use maven to build the module, and additionally copy the dependencies alongside their output: 

    cd <source-dir>
mvn clean package dependency:copy-dependencies -DincludeScope=runtime -DskipTests

  2. Run the examples: 

    $ java -cp "target/classes/:target/dependency/*" org.apache.qpid.protonj2.client.examples.HelloWorld

3.3. Running Hello World on Microsoft Windows
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The Hello World example creates a connection to the broker, sends a message containing a greeting to the hello-world-example queue, and receives it back. On success, it prints the received message to the console.

  1. Use maven to build the module, and additionally copy the dependencies alongside their output: 

    cd <source-dir>
mvn clean package dependency:copy-dependencies -DincludeScope=runtime -DskipTests

  2. Run the examples: 

    $ java -cp "target\classes\;target\dependency\*" org.apache.qpid.protonj2.client.examples.HelloWorld
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