28.3.3. Java Stack

Try these first

1. 1.

   What is a stack frame?

   Hint

   Think about what information is needed for method execution.

2. 2.

   What does the operand stack do?

   Hint

   Consider how calculations are performed.

3. 3.

   What does each stack frame in the Java Stack store?

   • Only local variables
   • Local variables
   • operand stack
   • and return address
   • Only return addresses

   Hint

   Consider what information is necessary for method execution.

4. 4.

   True or False: The operand stack is used to store local variables permanently.

   • True
   • False

   Hint

   Think about the lifespan of each type of data stored.

5. 5.

   There are three consecutive method calls in a program; each calls another method recursively. What is the maximum stack depth if each method call can have two local variables, and what are the implications if this depth is exceeded?

   Hint

   Consider the recursive structure and how many frames could be created.

6. 6.

   Develop a simple Java program that triggers a StackOverflowError and explain how the Java Stack handles each method call.

   Hint

   Focus on how recursion should ideally terminate with a base case.