Enthuware

Why are someInt and changeIt accessed directly by main instead of TestClass.someInt and TestClass.changeIt. Is it because main is in the TestClass class? Because it is a static method ans static methods can directly access static variables and static methods?

Yes, static as well as instance methods of the same class can access other static methods and static variables without the need for writing the classname. Instance methods can access instance fields as well without any qualifier.

"an" is written twice

Fixed.
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