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 a static inner class?
A static inner class is a nested class which is a static member of the outer class . It can be accessed without instantiating the outer class, using other static members. Just like static members, a static nested class does not have access to the instance variables and methods of the outer class.
Read moreWhat is the difference between static and class?
A class method takes cls as the first parameter while a static method needs no specific parameters . A class method can access or modify the class state while a static method can’t access or modify it. In general, static methods know nothing about the class state.
Read moreWhat are the differences between member inner class and local inner class?
inner class: Can only exist withing the instance of its enclosing class. Has access to all members. local class: class declared in a block. It is like an inner class (has access to all members) but it also has access to local scope.
Read moreCan inner class extend any class?
It can extend exactly one class or implement exactly one interface . It can implement multiple interfaces regardless of whether it also extends a class.
Read moreCan we declare inner class as protected?
We can declare the inner classes as private or protected , but it is not allowed in outer classes.
Read moreCan inner class be protected in Java?
Java inner class is defined inside the body of another class. Java inner class can be declared private, public, protected, or with default access whereas an outer class can have only public or default access.
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