Cloud Pub/Sub API Client Library for Java

While this library is still supported, we suggest trying the newer Cloud Client Library for Cloud Pub/Sub, especially for new projects. See Cloud Pub/Sub Libraries for installation and usage details.

Cloud Pub/Sub API: Provides reliable, many-to-many, asynchronous messaging between applications.

This page contains information about getting started with the Cloud Pub/Sub API using the Google API Client Library for Java. In addition, you may be interested in the following documentation:

Add Library to Your Project

Select your build environment (Maven or Gradle) from the following tabs, or download a zip file containing all of the jars you need:


Download the Cloud Pub/Sub API v1beta2 Client Library for Java.

See the pubsub/readme.html file for details on:

  • What the zip file contains.
  • Which dependent jars are needed for each application type (web, installed, or Android application).

The libs folder contains all the of the globally applicable dependencies you might need across all application types.