Rules for Java Class A class can have only public or default(no modifier) access specifier . It can be either abstract, final or concrete (normal class). It must have the class keyword, and class must be followed by a legal identifier. It may optionally extend only one parent class.
Read moreWhat is a reason to use an inner class?
When to Use Nested Classes, Local Classes, Anonymous Classes, and Lambda Expressions. 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 .
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 moreWhat are the advantages of inner classes in Java?
The main advantages of a nested (inner) class are:
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?
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