24.2.4. Accessing Fields and Methods

Try these first

1. 1.

   What is the purpose of setAccessible(true) in Reflection?

   Hint

   Think about how Java handles access control.

2. 2.

   Explain what a Field object is in Java Reflection.

   Hint

   Consider how you interact with attributes in a class.

3. 3.

   What does setAccessible(true) do?

   • It encrypts data
   • It bypasses access control checks
   • It checks for security breaches

   Hint

   Think about how this affects data security.

4. 4.

   Is Reflection slower than normal field access?

   • True
   • False

   Hint

   Consider the efficiency of various access methods.

5. 5.

   Write a Java program that demonstrates the use of Reflection to access a private method.

   Hint

   Use the `getDeclaredMethod` and `invoke` methods.

6. 6.

   Discuss the trade-offs when using Reflection for dynamic typing versus static typing in Java.

   Hint

   Consider how each affects code maintainability and performance.