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Asked: 2026-05-27T10:41:10+00:00

I have an incredibly basic question, but searching for it in the docs has

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I have an incredibly basic question, but searching for it in the docs has done me no good, probably because I don’t know what i’m searching for. I’ve actually completed several programs but never used this notation i’m finding in quite a few code examples I’ve been researching.

Up until now, when I’ve instantiated a class I’ve basically done the following:

public ClassType mclassname;
mclassname = new ClassType();

But I’ve seen this used:

public ClassType _mclassname;
__mclassname = new VortexView();

I can’t find the documentation for the difference in the 2, but I’m thinking that it has something to do with making multiple instances of the object impossible?

If you know what I should look for to figure this out myself, that would be sufficient.
I just can’t find it in the documents for instantiating classes.

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1 Answer

  1. Editorial Team

    Nested classes can be declared private whcih means they can only be used as a type inside the enclosing class.

    Prefixing the names of class members with underscores has no syntactic meaning. It is a convention from C++ (and Python where it’s specifically used to mark private members) that is not generally used in Java, but not uncommon among programmers who are more familiar with C++ or Python.

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