IN java collections we have both interfaces and classes.
instead of using interfaces why we can't use classes only
like that why we can't use interfaces only. why we need two
things interface and class.
- 6 Answers
- 10946 Views
- Accenture, CTS, I also Faced
- E-Mail Answers
Answer Posted / reddy
The purpose of interface is to have abstract methods and
the class which implemnts the interface has to define the
methods in the interface.
The reason why java collections have both interfaces and
classes is interface will have common methods which will be
needed by one or many classes. The classes which wants to
behave like this interface will implement this interface
and define methods in the interface.
| Is This Answer Correct ? | 14 Yes | 4 No |
Post New Answer View All Answers
Differentiate between static and non-static methods in java.
What do you mean by an interface in java?
What is an object in java and how is it created?
Explain public static void main(string args[]) in java.
What is the difference between break and continue statements?
What is parsing in java?
What is java string pool?
What is a classloader in java?
What are the differences between heap and stack memory in java?
explain different ways of using thread? : Java thread
Realized?
Is minecraft 1.15 out?
What is the difference between equals() and == in java?
How to sort array in descending order in java?
Write a program to find the whether a number is an Armstrong number or not?
