Question

I have some functions collected as methods in a class called func. I use those methods quite often in different classes. Is there a way in java to call those functions without creating a new object or calling it like this: func.myFunction();?

I want: myFunction();

Answer 1

There are two issues:

• you can’t call non-static methods without having an instance of that class and
• you can’t directly call static methods without mentioning the class name.

The first one is easy to solve: if your method doesn’t actually use any non-static members (fields or methods) of the class, then simply adding the static keyword enables you to call it without an instance of the class:

// in YourClass:
public static void yourMethod() {
  //stuff
}

// somewhere else:
YourClass.yourMethod();

And about the second item: I kind-of lied there, you can do that, but you need a static import:

// at the beginning of your .java file
import static yourpackage.YourClass.yourMethod;

// later on in that file:
yourMethod();

Also: there are no functions in Java, only methods.