The Couchbase Java SDK is a purely Java-based library. It is a highly performant package with support for both synchronous and asynchronous operations. The most recent version contains support for Java 8 and earlier releases.
This SDK should be used for development against Couchbase Server versions ranging from 2.5 to 3.x. Version 1.2 of the SDK was developed to support the earlier versions of Couchbase Server.
Java developers will most likely want to use Maven to add the Java SDK to their projects. The package is accessible from Maven Central:
<dependencies>
<dependency>
<groupId>com.couchbase.client</groupId>
<artifactId>java-client</artifactId>
<version>2.0.0</version>
</dependency>
</dependencies>Additionally, the SDK team publishes the Java binaries, which may be found at http://docs.couchbase.com/developer/java-2.0/download-links.html. The source code for the library is available on GitHub at https://github.com/couchbase/couchbase-java-client.
The following snippet demonstrates the basics of using the Couchbase Java SDK:
//Configure the cluster
CouchbaseCluster cluster = CouchbaseCluster.create("127.0.0.1");
//Open a bucket connection
Bucket bucket = cluster.openBucket("default");
//Create, and store a JSON document
JsonObject message = JsonObject.create().put("message", "The Hello, World!");
JsonDocument document = bucket.insert(JsonDocument.create("somekey", message));
//Read the document
JsonDocument savedMessage = bucket.get("somekey");
// Close the bucket connection
cluster.disconnect();