RE: What purpose does the ‘public static void main’ statement serve in Java?
As a beginner in Java, I see the ‘public static void main’ statement in every program. What does it do and why is it necessary?
The `public static void main` statement in Java is the entry point for any Java application. When you start a Java program, the JVM looks for a method with this exact signature to start running the program. Here's what each component means:
1. `public`: It is an access specifier, which means the method is accessible from anywhere.
2. `static`: It means the method belongs to the class and not an instance of the class, so no object is needed to invoke the method.
3. `void`: It means the method doesn't return anything.
4. `main`: It's the name of the method. The JVM looks for this method to start the execution of the application.
5. `String[] args`: It's the parameter to the main method, representing command-line arguments.
So, in summary, `public static void main` is necessary as it's the entry point for execution in a Java application.