Explain different ways of creating a thread. Which one would you prefer and why ?

There are three ways that can be used in order for a Thread to be created:

• A class may extend the Thread class.
• A class may implement the Runnableinterface.
• An application can use the Executorframework, in order to create a thread pool.

Explain the available thread states in a high-level. During its execution, a thread can reside in one of the following status:

• NEW: The thread becomes ready to run, but does not necessarily start running immediately.
• RUNNABLE: The Java Virtual Machine (JVM) is actively executing the thread’s code.
• BLOCKED: The thread is in a blocked state while waiting for a monitor lock.
• WAITING: The thread waits for another thread to perform a particular action.
• TIMED_WAITING: The thread waits for another thread to perform a particular action up to a specified waiting time.
• TERMINATED: The thread has finished its execution.