How to run the Java demo

About this document

This document explains how to build and run the demo of the Java version of libphonenumber, from the command line on Linux or Mac, using Google App Engine. By following the instructions here, you can build a demo running against any revision of the Java code by supplying jar files you build on your own, or downloading the ones from Maven Central.

Detailed steps

Install Google App Engine

Download and follow the instructions to install the Java SDK of Google App Engine. This document assumes it is named as appengine-java-sdk. You may want to rename the directory after unpacking.

Check out the demo code

Check out the Java code:

git clone https://github.com/googlei18n/libphonenumber.git

Create a symlink to your unpacked appengine sdk directory at the same level as the java directory. Alternatively, update java/demo/build.xml to point to the right location for the appengine sdk.

Get the phone number library jars

Save the libphonenumber, geocoder, carrier, and prefixmapper jars under demo/war/WEB-INF/lib/.

You can either download them from the Maven repository or build them yourself by running:

git clone https://github.com/google/libphonenumber.git
cd libphonenumber/java
ant jar
cp build/jar/* demo/war/WEB-INF/lib

Run the demo code

Start the server:

cd demo
ant runserver

This will start a server on your localhost, and you can try it out by pointing your browser to http://localhost:8080/.

Troubleshooting

If you get a warning from App Engine asking you to upgrade your JRE to Java 1.6 or later, you might need to install Java 1.6 and point your JAVA_HOME to it.

  • To see your current JAVA_HOME, run echo $JAVA_HOME.
  • To see the list of JDKs currently installed, use update-java-alternatives -l.
  • To reset JAVA_HOME, use export JAVA_HOME=[path to Java 1.6 SDK]/jre.

Now run ant runserver to start the server on your localhost.

Uploading your own demo App Engine application

If you want to upload the demo to your own App Engine application, follow the steps to register an application with App Engine.

Then run:

../appengine-java-sdk/bin/appcfg.sh update war

The demo will be uploaded to http://application-id.appspot.com/.