What data and variables are usually located in the stack during program execution?

In the stack area during the execution of a Java program, the following are usually located:

• Local variables of methods (primitive types and object references).
• Method parameters.
• Return address from the method.
• Call frames (stack frames), which contain information about the current state of method execution.

Objects are created in the heap, and the stack only stores references to them and data necessary for managing method calls.