Quartz Scheduler
Quartz is a job scheduling system that can be integrated with, or used alongside virtually any other software system.
Quartz is quite flexible, and contains multiple usage paradigms that can be used separately or together.
Quartz is very light-weight, and requires very little setup/configuration
Quartz is fault-tolerant, and can persist ('remember') your scheduled jobs between system restarts.
Since JDK 1.3, Java has built-in timer capabilities,
1.java.util.Timer
2.java.util.TimerTask classes
Why we use Quartz rather than these standard features?
jar files needed for Quartz are:
quartz-all-2.1.7.jar
slfj-log4j12-1.6.1.jar
sl4j-api-1.6.1.jar
log4j-1.2.14.jar