Quartz - A full-featured, Java-based, In-process job scheduler

Quartz is a full-featured, open source job scheduling service that can be integrated with, or used along side virtually any Java EE or Java SE application - from the smallest stand-alone application to the largest e-commerce system. Quartz can be used to create simple or complex schedules for executing tens, hundreds, or even tens-of-thousands of jobs; jobs whose tasks are defined as standard Java components that may executed virtually anything you may program them to do. The Quartz Scheduler includes many enterprise-class features, such as JTA transactions and clustering.

If your system has recurring maintenance jobs then Quartz may be your ideal solution.

Its major features include:

• Job Scheduling, Jobs are scheduled to run when a given Trigger occurs
• Job Execution
• Job Persistence
• Quartz can participate in JTA transactions
• Supports Fail-over, Load Balancing