Prevent scheduler to create multiple jobs(threads)

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Java

webservice

In my application i have to run number of number of jobs.here if my first job is taking 10 minutes for executing the job meanwhile 10 jobs will be waiting in the queue because for every minute one job will add and it will wait in the queue for their turn to execute.until and unless first job will complete its task because here i am using statefulJob so there is no problem here but if second job also will take 10 minutes to complete its task means mean while 19 jobs will wait in the queue so because of this If heap size reach its max limit then the application will not run and this is big problem.
so how to avoid this by using quartz properties.

What I have tried:

Job scheduling ,quartz properties