This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
The JVM has a section of it devoted to keep threads from arguing with each other about who gets to run when. That is called the thread schedular. Think of it as a traffic cop telling each thread when it can run and for how long.
"JavaRanch, where the deer and the Certified play" - David O'Meara