multithreading in Spring Boot REST API

[cobalt plaza]

In my service method I need to do the following:

1. get an entry from the database and lock it for updating and deleting,
2. check the status property of the entry (entity object),
3. if the status is "stopped" return "starting..."(scenarios where the status is not stopped are not a problem)
4. what for 15 seconds
5. update status to "running"
6. release the lock.

the problem is that when I return the value in step 4 the method is over, and das so the transaction, so the lock gets released and steps 5 and 6 are not getting executed. I have to make another thread and execute steps 5 and 6 there while still keeping the same transaction so that the lock created in step 1 doesn't get released.
my solution:

public String startServer(int id) {
Object lock1 = new Object();

    new Thread(() -> atamptStart(lock1,id)).start();
    try {
        lock1.wait();
    }
    catch (InterruptedException e) {
        e.printStackTrace();
    }

    return message;
}```

atamptStart(lock1, id) calls notify() on the lock1 object when the status is obtained from db and continues executing steps 5 and 6 afterward.
is this a good approach and if not what is better? 
Thanks.

[distant patrol]

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[rapid sorrel]

I’d suggest looking at a ReentrantReadWriteLock. It’ll most likely have what you’re looking for

[cobalt plaza]

Thank you Twala, this helps definitely

[distant patrol]

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