Interface VS Abstract
class
|
S.No
|
Abstract
|
Interface
|
|
1
|
May or maynot contain constructor
|
Cannot contain constructor
|
|
2
|
May or maynot have abstract
methods
|
All methods are public and
abstract by default
|
|
3
|
May or maynot contain static/final
fields
|
All fields are public, static and
final by default
|
|
4
|
Abstract class is extended by a
class
|
Interface is implemented by a
class
|
|
5
|
Cannot
|
An interface can extend multiple
interfaces
|
|
6
|
Keyword is Abstract
|
Keyword is Interface
|
An interface can only
extend another Interface; an interface can only be implemented by a class.
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