FAQ Part 9: Advanced Java Concepts

What is the difference between final, finally, and finalize?

• final: Prevents inheritance or modification
• finally: Ensures a block is executed after try-catch
• finalize(): Called by the garbage collector before object destruction

What are the types of memory in Java?

• Heap: Stores objects
• Stack: Stores local variables and function calls
• Method Area: Stores class structures
• PC Register: Stores the current execution address
• Native Stack: For native methods

How does Java achieve platform independence?

By compiling source code into bytecode that runs on the JVM. Each platform has its own JVM implementation, allowing the same bytecode to run anywhere.