23.7. Immutable Objects

Try these first

1. 1.

   What is an immutable object?

   Hint

   Think about how strings work in Java.

2. 2.

   Why are immutable objects considered thread-safe?

   Hint

   Consider what happens when multiple threads access the same object.

3. 3.

   What does it mean for an object to be immutable?

   • It can change states
   • It cannot be changed after creation
   • It is always static

   Hint

   Recall the definition of immutable.

4. 4.

   Immutable objects are thread-safe. True or False?

   • True
   • False

   Hint

   Consider how they behave in multithreaded contexts.

5. 5.

   Create an immutable class that models a product with properties like name and price. How would you handle an update to the product's price?

   Hint

   Consider how you would extend the class with a method that returns the new instance.

6. 6.

   Discuss how the use of immutable objects can lead to improved performance in certain cases within a multi-threaded application.

   Hint

   Reflect on how data is shared in multithreaded programming.