In Java, the main
method is a standard method that is used to start the execution of a Java program. It is defined as the entry point of a Java application and is called by the Java Virtual Machine (JVM) when the program is run.
The main
method is defined with the following signature:
public static void main(String[] args)
The main
method must be defined as public
, static
, and void
and must accept a single argument of type String[]
.
It is not strictly required to have a main
method in every Java program, but it is necessary to have a main
method if you want to run the program as a standalone application. If you do not need to run the program as a standalone application and only want to use it as a library or module in another program, you do not need to define a main
method.
For example, if you want to create a Java program that can be run from the command line, you will need to define a main
method. On the other hand, if you want to create a Java library that provides utility functions for other programs, you do not need to define a main
method.
For more information on the main
method in Java, you can refer to the Java documentation or other online resources.