Initializes internal state after construction but before
processing any tasks. If you override this method, you must
invoke {@code super.onStart()} at the beginning of the method.
Initialization requires care: Most fields must have legal
default values, to ensure that attempted accesses from other
threads work correctly even before this thread starts
processing tasks.
Initializes internal state after construction but before processing any tasks. If you override this method, you must invoke {@code super.onStart()} at the beginning of the method. Initialization requires care: Most fields must have legal default values, to ensure that attempted accesses from other threads work correctly even before this thread starts processing tasks.