What is a Java Thread and How does it work?

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A java thread is an execution context or a lightweight process. It is a single sequential flow of control within a program. Programmer may use java thread mechanism to execute multiple tasks at the same time.

                Thread class and run() Method

Basic support for threads is in the java.lang.Thread class. It provides a thread API and all the generic behavior for threads. These behaviors include starting, sleeping, running, yielding, and having a priority.

The run() method gives a thread something to do. Its code should implement the thread's running behavior.

There are two ways of creating a customized thread:

Sub classing java.lang.Thread and Overriding run() method.

Implementing the java.lang.Runnable Interface.

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