What does static method do for a class?

Answer 1

It can be called easily as it does not need any objects to invoke.

class Aa{

static void hi(){
System.out.print("hello");

}
public static void main (String[] args){
hi(); //output: hello
}
}

You can call hi() directly in main() method without creating instance of the class

Answer 2

https://stackoverflow.com/questions/2671496/java-when-to-use-static-methods

Answer 3

Thanks Muhd Khairul Amirin Bin Yaacob. But can I know its purpose why we use static method even though we can just create instance.

Answer 4

you assign a method as static when you want to use it in another class or quick calling of it.
for example
suppose you take a method:
void m()
{}
when you want to call it you need to create the object of the class but if you use static before void you can call it directly as:
m();
hope you get it.