inner classes are in the same file, whereas subclasses can be in another file, maybe in another package . You cannot get an instance of an inner class without an instance of the class that contains it.
Read moreWhat is an inner class in Java?
Java inner class or nested class is a class that is declared inside the class or interface . We use inner classes to logically group classes and interfaces in one place to be more readable and maintainable. Additionally, it can access all the members of the outer class, including private data members and methods.
Read moreWhy inner class is used 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 moreIs it good to use inner class in Java?
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 moreIs there a class class in Java?
Java provides a class with name Class in java. lang package . Instances of the class Class represent classes and interfaces in a running Java application. The primitive Java types (boolean, byte, char, short, int, long, float, and double), and the keyword void are also represented as Class objects.
Read moreWhat is classes in Java?
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. All class objects should have the basic class properties.
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