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).
Read moreWhat is purpose of inner class in Java?
Inner classes are a security mechanism in Java. We know a class cannot be associated with the access modifier private, but if we have the class as a member of other class, then the inner class can be made private. And this is also used to access the private members of a class.
Read moreWhat are Java classes used for?
A class — in the context of Java — is a template used to create objects and to define object data types and methods . Classes are categories, and objects are items within each category.
Read moreWhy are inner classes discouraged in Java?
Non-static inner classes can hide a performance problem . They do have access to member fields on the enclosing class, but not directly, but via getters which are created automatically. This will be slower then just copying the members of the enclosing class to the inner class.
Read moreWhat are the main disadvantages of using Java inner classes?
Q7)What are disadvantages of using inner classes?
Read moreWhy do we need inner class can’t we just work with outer classes wherever we implement inner classes?
Making Address and City as outer class exposes City to any of the Class . Making it an inner class of Address will make sure that its accessed using object of Address.
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