Core JAVA Interview Questions by Unknown

Author:Unknown
Language: eng
Format: epub
Published: 2022-02-06T09:35:13+00:00

Answer:

The addition of Java 8 default interface methods has reduced the distinction between abstract classes and interfaces. Prior to Java 8, interfaces could not have concrete methods. However, Java 8 has added default and static methods in interfaces. These are methods that have a method body. This has further reduced the distinction between abstract classes and interfaces. However, there are there some differences between the two.These are as follows:

•Abstract classes can have instance fields. Interfaces on the other hand cannot have instance fields. So basically, an abstract class can have a state via an instance field, whereas an interface cannot have state.

•Abstract class can have a constructor and can be instantiated. Interface on the other hand cannot have a constructor.

Write a code sample that demonstrates a default method.

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.