Answer / udita bose

Sorry, but previous answer by Yayati Pavan does not answer the question. If that answer is true then there should not be a problem with a "protected" class, as "protected" keyword is wider than default one.

There are no protected class because it is unnecessary to have them. Access modifiers for classes determine 2 things

i) If a class can create instance of other class ?
ii)If a class can extend other class ?

Now, any class within the same package will be able to create an instance of "protected" class - this is true for default-accessor and public classes. No class outside the package will be able to create an instance of "protected" class - this holds good for default-accessor classes.

Again, for a "protected" class by its definition will be extendible by any class within its package - so is default-accessor class, and extendible for any class outside its package - so are all public classes.

Both of this reason nullifies the reason for a protected class.

Answer / yayati pavan

When the non nested class declared as public or
default(public) the jvm can access the class and execute.
So non nested class must always public. other wise jvm can't
access the class.

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