28.8. Class and Code Optimization Tips

Try these first

1. 1.

   What are primitive types?

   Hint

   Think of the foundational data types in Java.

2. 2.

   Why should we avoid excessive object creation?

   Hint

   Consider how Java manages memory.

3. 3.

   Why should you prefer primitive types over wrapper classes?

   • They use less memory
   • They are easier to read
   • They support only integers

   Hint

   Think about memory usage in applications.

4. 4.

   True or False: Using synchronized methods are always the best choice for thread management.

   • True
   • False

   Hint

   Consider scenarios where flexibility is needed.

5. 5.

   Implement a simple Java application that demonstrates effective use of string concatenation with StringBuilder in a loop. Include optimizations in object management and caching techniques.

   Hint

   Consider how to reduce the number of string objects created.

6. 6.

   Create a multi-threaded application utilizing thread pools and ReentrantLock. Ensure it handles concurrent modifications correctly while optimizing performance.

   Hint

   Think about how to handle shared data safely in a fast-paced environment.