A thread is a lightweight subprocess. It is a separate path of execution because each thread runs in a different stack frame. A process may contain multiple threads. Threads share the process resources, but still, they execute independently.

Following are some questions asked on threads :

• What is the thread?
• Differentiate between process and thread?
• What do you understand by inter-thread communication?
• What is multithreading?

• https://en.wikipedia.org/wiki/Thread_(computing)
• https://www.javatpoint.com/java-multithreading-interview-questions