There are 4 types of inner classes in Java:
Read moreWhat is inner classes in OOP?
In object-oriented programming (OOP), an inner class or nested class is a class declared entirely within the body of another class or interface . It is distinguished from a subclass.
Read moreWhich are known inner classes?
Non-Static Nested Class (Inner Class) A non-static nested class is a class within another class. It has access to members of the enclosing class (outer class). It is commonly known as inner class .
Read moreWhy would you use an inner class?
Use a non-static nested class (or inner class) if you require access to an enclosing instance’s non-public fields and methods . Use a static nested class if you don’t require this access.
Read moreHow do you use a class inside a class?
Non-static nested classes are called inner classes. Nested classes that are declared static are called static nested classes. A nested class is a member of its enclosing class. Non-static nested classes (inner classes) have access to other members of the enclosing class, even if they are declared private .
Read moreWhat is the purpose of an inner class?
Nested classes represent a particular type of relationship that is it can access all the members (data members and methods) of the outer class, including private. Nested classes are used to develop more readable and maintainable code because it logically group classes and interfaces in one place only.
Read moreWhat class must an inner class?
It must extend the enclosing class . Explanation: Option B is correct because a static nested class is not tied to an instance of the enclosing class, and thus can’t access the nonstatic members of the class (just as a static method can’t access nonstatic members of a class).
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