What is a good way to call a method from the main game loop via a scheduled alarm?

What is a good way to call a method from the main game loop via a
scheduled alarm?

References

Reference NO 1

http://stackoverflow.com/questions/15188537/what-is-a-good-way-to-call-a-method-from-the-main-game-loop-via-a-scheduled-alar

Reference NO 2

http://stackoverflow.com/questions/14765910/could-not-find-class-xxx-referenced-from-method-xxx-yyy

Reference NO 3

http://stackoverflow.com/questions/18039227/how-to-execute-methods-in-java-in-a-certain-order-without-using-a-main-method

Reference NO 4

http://stackoverflow.com/questions/16916114/calling-alarm-from-a-service

Reference NO 5

http://stackoverflow.com/questions/13427785/how-to-run-a-service-from-9-am-to-4-pm-daily

Reference NO 6

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Reference NO 7

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Reference NO 8

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