Download Android App in your Android Device from Google Play Store
- Search for "Withoutbook Practice Exam Test" in Mobile/Tablet Play Store
Practice InterviewNew Search by Name or Email

Exams Attended

Make Homepage

Bookmark this page

Subscribe Email Address

Java Design Patterns Interview Questions and Answers

Ques. What is observer design pattern in Java?
Ans. Observer design pattern is based on communicating changes in state of object to observers so that they can take there action. Simple example is a weather system where change in weather must be reflected in Views to show to public. Here weather object is Subject while different views are Observers.
Is it helpful? Yes No

Most helpful rated by users:

©2020 WithoutBook