There are two ways to create a new thread of execution

ü    1. One is to declare a class to be a subclass of "Thread".This subclass should override the run method of class Thread. An instance of the subclass can then be allocated and started.

ü    2. The other way to create a thread is to declare a class that implements the is "Runnable" interface. That class then implements the run method. An instance of  the class can then be allocated, passed as an argument when creating Thread, and started.