Why is the main method static?

🚀 Declaration of main Method

public static void main(String[] args)

🧠 Why Is main Static?

1. Avoids Object Creation at Launch
   • The JVM needs a starting point to run your program.
   • If main weren’t static, it would require creating an object of the class first.
   • But creating that object would need a method to start with… creating a paradox!
   • Declaring it static solves this: JVM can call main() directly using the class name.
2. Program Entry Point Must Be Fixed
   • Java needs a known, consistent method signature as the program’s entry.
   • Making it static ensures it’s tied to the class itself, not an instance.
3. Memory Efficiency
   • No need to allocate memory to an object just to begin execution.
   • Only one copy of the main() method exists per class, as it belongs to the class, not instances.
4. Method Binding at Compile-Time

• Static methods use early binding (compile-time binding), improving speed during startup.

🧾 Bonus: What If You Remove static?

If you write:

public void main(String[] args)

• The program compiles, but it won’t run, and you’ll get:

Error: Main method not found in class…

Because JVM specifically looks for:

public static void main(String[] args)

🧠 Interview Takeaways