Why nested classes are needed?

As mentioned in the section Nested Classes, nested classes enable you to logically group classes that are only used in one place, increase the use of encapsulation, and create more readable and maintainable code. … Use it if you are encapsulating a single unit of behavior that you want to pass to other code.

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How do you define an inner class?

Java inner class or nested class is a class that is declared inside the class or interface . We use inner classes to logically group classes and interfaces in one place to be more readable and maintainable. Additionally, it can access all the members of the outer class, including private data members and methods.

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What is inner class in CPP?

Nested Classes in C++ A nested class is a class which is declared in another enclosing class . A nested class is a member and as such has the same access rights as any other member. The members of an enclosing class have no special access to members of a nested class; the usual access rules shall be obeyed.4 Oca 2019

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