Java projects often face long build and redeployment times, particularly impacting developers who frequently check their work. JRebel by ZeroTurnAround offers a solution by enabling the reloading of changes to class files, resources, and frameworks without the need for a full redeployment, thus saving significant time. For instance, a developer spending 96 minutes daily on redeployment can save about 60 minutes using JRebel. Integrating JRebel into a project, particularly with IntelliJ IDEA, involves installing the plugin and activating a license, after which developers can benefit from reduced wait times. Testing JRebel with a Couchbase Java project, such as the restful-angularjs-java example from GitHub, demonstrates its convenience; developers can make quick changes to queries without full redeployment, enhancing the efficiency of development and testing processes. Overall, JRebel significantly reduces the time and trouble associated with Java application development, particularly when working with Couchbase Server.