Java Interview Guide : 200+ Interview Questions and Answers - What is an anonymous class?

The video tutorial explains anonymous classes, which are classes without a name. It demonstrates creating a comparator using an anonymous class and shows how to override methods within them. The tutorial also discusses the limitations and specific scenarios where anonymous classes are useful, emphasizing that they are not typically recommended for reuse in real-world applications.

What is an anonymous class?

• A class that extends multiple classes

• A class that cannot be instantiated

• A class without a name

• A class with a unique name

How does the reverse comparator in the example work?

• It sorts strings in alphabetical order

• It reverses the order of strings

• It removes duplicates from a list of strings

• It converts strings to uppercase

What is demonstrated by overriding the bark method in the video?

• Using an anonymous class to override a method

• Creating a new class with a name

• Using inheritance to create a new class

• Implementing multiple interfaces

Why are anonymous classes generally not recommended for reuse?

• They are too complex to understand

• They require too much memory

• They lack a name, making them hard to reference

• They cannot be instantiated

In what scenario is it appropriate to use an anonymous class?

• When the class will be reused multiple times

• When the class needs to be abstract

• When the class is only needed for a specific, limited purpose

• When the class needs to be public