Question

I know this fact that main() method is for starting point of programme which is defined by technology.But still we can do entire thing without main method any without any error.
I have this code

    public class WithoutMain {

        int x=10;
        int y=20;

        void show() {
            System.out.println(x);
            System.out.println(y);
        }

        static {
            WithoutMain t=new WithoutMain();
            t.show();
            System.exit(0);
        }

    }

I can write this programme without main method, so why is it necessary to have a main method?

Answer 1

you can run program without main() but you cant run exe or jar file without entry point.
the main method is the default entry point for a programme,you can run independently jar files.
If you’re not trying to produce a programme that needs launching independently, you won’t need it – for example, a jar referenced by other programmes, or a website.
by help of this main() you can pass arguments