Quartz 1
If you change your class to implement StatefulJob instead of Job, Quartz will take care of this for you. From the StatefulJob javadoc:
stateful jobs are not allowed to
execute concurrently, which means new
triggers that occur before the
completion of the execute(xx) method
will be delayed.
StatefulJob extends Job and does not add any new methods, so all you need to do to get the behaviour you want is change this:
public class YourJob implements org.quartz.Job {
void execute(JobExecutionContext context) {/*implementation omitted*/}
}
To this:
public class YourJob implements org.quartz.StatefulJob {
void execute(JobExecutionContext context) {/*implementation omitted*/}
}
Quartz 2
In version 2.0 of Quartz, StatefulJob is deprecated. It is now recommended to use annotations instead, e.g.
@DisallowConcurrentExecution
public class YourJob implements org.quartz.Job {
void execute(JobExecutionContext context) {/*implementation omitted*/}
}