Table of Contents
- 1 What is the difference between a static and a non-static inner class?
- 2 What is the difference between lambda expression and an inner class instance in terms of the this reference?
- 3 Which of the following option defines an anonymous inner class and also create the instance of that class?
- 4 What is the difference between Anonymous and lambda function in Python?
What is the difference between a static and a non-static inner class?
A non-static nested class has full access to the members of the class within which it is nested. A static nested class does not have a reference to a nesting instance, so a static nested class cannot invoke non-static methods or access non-static fields of an instance of the class within which it is nested.
What is the difference between lambda expression and an inner class instance in terms of the this reference?
Anonymous inner class can be instantiated. Lambda Expression can’t be instantiated. Inside Anonymous inner class, “this” always refers to current anonymous inner class object but not to outer object. Inside Lambda Expression, “this” always refers to current outer class object that is, enclosing class object.
What are the differences between local inner class and member 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.
What are anonymous classes how are they declared CAN anonymous classes declare variables and methods of its own?
Anonymous classes enable you to make your code more concise. They enable you to declare and instantiate a class at the same time. They are like local classes except that they do not have a name. Use them if you need to use a local class only once.
Which of the following option defines an anonymous inner class and also create the instance of that class?
Explanation: D is correct. It defines an anonymous inner class instance, which also means it creates an instance of that new anonymous class at the same time. The anonymous class is an implementer of the Runnable interface, so it must override the run() method of Runnable.
What is the difference between Anonymous and lambda function in Python?
In Python, an anonymous function is a function that is defined without a name. While normal functions are defined using the def keyword in Python, anonymous functions are defined using the lambda keyword. Hence, anonymous functions are also called lambda functions.