what are the diffrences between interface and abstract
class?
- 4 Answers
- 7048 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / cool
=>Abstract class means
1)We can have concreate methods and abstrat methods
2) We can give implementation for concreate methods.
Interfaces means
1)we could not have concreate methods.All the methods are
abstract methods implicitly.
2)And those methods allows only public access specifier
only.It wont
allow any final,static keywords with methods .
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / cool
=>Interface :
1. All the methods in the interface are abstract.
2. We can achieve multiple inheritance through interface.
3. All the methods in the interface should be without
Access modifier. Implicitly public.
Abstract class:
1. Abstract class may contain abstract method and non-
abstract method.
2. We can achieve only single inheritance and multi-level
inheritance.
3. Abstract methods have Access modifiers.
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / ravikiran
interface is a purely abstract one when we wish to
implement all the methods for different scenarios in
different places we make use of implementation of the
interface.
abstract class is the one which contains both abstract as
well as non abstarct methods,We will define this if you
want ot restrict the instantiation of the class.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / varsha vilas kalebag
interface is form by many interface but class can extend
only one another class
interface are very slow they require some time for
prcoessing method & class are fast
| Is This Answer Correct ? | 0 Yes | 2 No |
How big is a 32 bit integer?
i need to know the website that i can compile and run a java code in online.(while system doesn't contain any jdk and jre)
How many types of memory areas are allocated by jvm?
What is linked hashmap and its features?
How do you access command-line arguments within the code?
0 Answers Flextronics, Hexaware,
2) Suppose there are 5 directories having lot of files (say txt files) in each directory. 2 things :- 2.1) You want to search for filenames which have a particular pattern. 2.2) Out of these filtered files you want to search for a particular keyword or a search string. How can you achieve this?
In how many ways we can create threads in java?
can any body tell me? does advance java and j2ee both are same.
What is the difference between declaration and definition in java?
why HashTable not allow null key and value
What is meant by data hiding/encapsulation?
What is a singleton class in Java?
Core Java 
