What is the main function of JVM and why is it important for executing Java programs?

The main function of the JVM (Java Virtual Machine) is to execute Java bytecode, ensuring platform independence of programs. JVM interprets or compiles bytecode into machine code understandable by a specific operating system and hardware.

Why is this important:

• It allows the same Java program to run on different devices without changes.
• It manages memory (e.g., garbage collection), simplifying development.
• It provides security and execution isolation.

Example: when you compile Java code, you get bytecode (.class files), which is OS-independent. The JVM on the target machine takes this bytecode and executes it, ensuring the program runs.