The Spark Cassandra Connector has been moved to open-source on GitHub, with an additional Java-API module developed to meet user demand for Java compatibility alongside its primary use in Scala. This blog post explains how to use the new API to access Apache Cassandra via Apache Spark from Java applications, specifically targeting the 1.0.0-rc4 version of the connector compatible with Cassandra 2.0 and Spark 0.9. The example application described demonstrates the process of reading sales data, computing roll-up summaries, and displaying results, while utilizing the connector to create schema, generate random data, and save data to Cassandra using methods from the CassandraJavaUtil class. The tutorial highlights key features of the Spark Cassandra Connector, such as reading and writing RDDs to and from Cassandra, and serves as an introductory guide to integrating Cassandra with Spark applications. Additional resources, including full source code and documentation, are provided for further exploration.