14.3.2. Using the Runnable Interface

Try these first

1. 1.

   What is the purpose of the Runnable interface?

   Hint

   Think about the relationship between tasks and threads.

2. 2.

   What method must be overridden when implementing Runnable?

   Hint

   It's where the task logic is defined.

3. 3.

   What must a class do to be runnable in Java?

   • Extend Thread
   • Implement Runnable
   • Both A and B

   Hint

   Consider the purpose of the Runnable interface.

4. 4.

   True or False: The run() method must be invoked directly to start a thread.

   • True
   • False

   Hint

   Reflect on how thread execution flows.

5. 5.

   Design a Runnable class that simulates a basic ATM machine interface, allowing users to deposit and withdraw funds. Show how to handle multiple users accessing this ATM concurrently.

   Hint

   Consider scenarios where multiple threads modify the same account balance.

6. 6.

   Implement an example where a Runnable class generates Fibonacci numbers in a given range. Demonstrate how multiple threads can execute this task simultaneously.

   Hint

   Think about how to partition the ranges for different threads.