Threads

• Threads are separate sequences of operation which execute concurrently.
• Threads are similar to processes.
  • Processes are controlled by the operating system.
  • Threads are controlled by a process.
  • Processes have their own resources.
  • Threads share the resources of the parent process.
• Java provides control for multiple threads of execution.

Goes to "Not Runnable" if suspend() method sleep() method wait() method blocking on I/O	Goes back to "Runnable" if resume() method after delay notify() method I/O completion
Thread state diagram. Lifted from The Java Tutorial (Sun Microsystems).

Demonstrations

• The Incredible Machine: multiple threads of operation are created as the machine runs.
• Cine display uses thread to control display rate.