Thread: Comments on this code?

My predecessor (a very experienced Java programmer who has left) has written Java code and I don't understand why he did it that way. Does anyone have an idea when you would like to do something like that? Do you have other comments about the code?

@SuppressWarnings({"ClassWithoutLogger", "FinalClass"})
public final class ThreadUtil {
 
    static public boolean sleep(long pS, final Object pO) {
        try {
            synchronized (pO) {https://www.javaprogrammingforums.com/editpost.php?p=167774&do=editpost
                pO.wait(pS);
            }
        } catch (InterruptedException e) {
            return true;
        }
        return false;
    }
 
    private ThreadUtil() {
    }
 
}

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How is that method used in other parts of the code?
What does its caller do when true is returned?
What does it do when false is returned?

How is that method used in other parts of the code?
What does its caller do when true is returned?
What does it do when false is returned?

It is not used,

Ok, then it could be deleted without any problems.

Read the API doc for the Object class's wait method to see what it does: http://docs.oracle.com/javase/8/docs/api/index.html