Java中的“覆盖”主要目的是什么？

Question

this is how we can override main function in java....

public class animaltest 
{
    public static void main(String[] args)  
    {
        horse h = new horse();
        h.eat();
    }
}

public class inheritmain extends animaltest 
{
    public static void main(String[] args)  
    {
        System.out.print("main overrided");
    }
}

but what is the benefit of overriding main??

Answer 1

static methods do not override: they are shadowed. There are two different independent static methods in that case, namely animaltest.main and inheritmain.main . (See Can we override static method in Java? )

The "advantage" -- if any ;-) -- is that the program can be started/launched from either class as both classes implement the main method :

The main method is similar to the main function in C and C++; it's the entry point for your application and will subsequently invoke all the other methods required by your program.

Happy coding.

Answer 2

Overriding is not for STATIC functions, overriding is only for member functions which are not static.

In this case, No POLYMORPHIC will be observed.

Answer 3

I dont think you can override main in Java because you don't inherit main from any class in the first place. Hence there is nothing to be overriden.