java - Programs in netbeans do not terminate as they are done with execution but continue running on as "Running Tasks" -

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my programs in netbeans not terminate done execution continue running on running tasks appearing @ right bottom corner of netbeans window. each time re-run same program new thread added 'running tasks' when code done execution.

why caused ?

how can rectify ?

it seems 1 of user thread running, post code exact answer


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