Differentiate between the Thread class and Runnable interface for creating a Thread?

Answer

The Thread can be created by using two ways.

• By extending the Thread class
• By implementing the Runnable interface

However, the primary differences between both the ways are given below:

• By extending the Thread class, we cannot extend any other class, as Java does not allow multiple inheritances while implementing the Runnable interface; we can also extend other base class(if required).
• By extending the Thread class, each of thread creates the unique object and associates with it while implementing the Runnable interface; multiple threads share the same object
• Thread class provides various inbuilt methods such as getPriority(), isAlive and many more while the Runnable interface provides a single method, i.e., run().