10.3. Writing the Program

Try these first

1. 1.

   Define the purpose of a class in programming.

   Hint

   Think about organization and management of code.

2. 2.

   What is serialization?

   Hint

   How do we save an object to a file?

3. 3.

   What is the primary role of classes in object-oriented programming?

   • To encapsulate data
   • To execute code
   • To define arrays

   Hint

   Think about how we group variables and functions.

4. 4.

   True or False: Multithreading allows a program to handle multiple tasks simultaneously.

   • True
   • False

   Hint

   What does multitasking mean for programs?

5. 5.

   Implement a FileHandler class that includes methods for saving a list of employees, with exception handling for IO errors.

   Hint

   How would you ensure data is not lost if an error occurs during saving?

6. 6.

   Create a multithreading implementation that autosaves employee records every minute without blocking the main application.

   Hint

   What will you do if the sleep is interrupted?