The second thread, which uses more than 50% of my CPU, must be able to stop and run again, which I asked already with this question on Stack Overflow.

The second thread, which uses more than 50% of my CPU, must be able to stop and run again, which I asked already with this question on Stack Overflow.

EDIT:
The finish element will be changed by a getter and setter. Because it is volaitle, it shouldn't get complications.

I've a application which runs with two threads.
The main-Thread runs in one infinity-while-loop:

The second Thread, which uses more than 50% of my CPU, must be able to stop and run again, which I asked already with this question on Stackoverflow.
The solution works perfectly, but as I already said, it uses >50% of the CPU.
Here are the two loops of the solution:

How I'm able to reduce the use of CPU while hold the functionality?

I've a application which runs with two threads. The main thread runs in one infinity-while-loop:

The second thread, which uses more than 50% of my CPU, must be able to stop and run again, which I asked already with this question on Stack Overflow.

The solution works perfectly, but as I already said, it uses >50% of the CPU. Here are the two loops of the solution:

How could I reduce the use of CPU while retaining the functionality?