Other contributors have said "What is inner classes in java?" is the same question as "What is inner class in java?" If you believe that these are not asking the same thing and should be answered differently, click here
Quite simply, an inner class is one class within another. Typically the inner class will be a private inner class, and will only be used by the outer class.
Inner classes are very useful for classes that are written specifically to be used with the encompassing class. A good example of this would be a LinkedListNode class being part of a LinkedList...
You define an inner class within the curly braces of the outer class: class ExampleOuterClass { class ExampleInnerClass { } } Piece of cake. And if you compile it, %javac ExampleOuterClass.java...
Class in Java is a blueprint which is used to create objects in Java. Class contains both methods and variables and that's how it is different with C struct construct. in Java there are built in...
An inner class is a class within a class: class MyClass {
class MyInnerClass { }
} Inner classes in Java are normally used for things like the nodes of a linked list.