What is Interface in DART
In this article, you will learn how to use interface in dart
Dart Interface
An interface defines how one may interact with an object. In interface you can declare a abstract method (means you can declare body in it's sub class ), basically it is used for solving the problem of multiple inheritance.
Syntax of interface
| interface identifier interface name{ //.........Abstract Method.................//} e.g, interface MyInterface{ AbstactMethod();} |
Example of interface
|
interface Dartinterface{
MyInterface();
}
class BasicInterface implements Dartinterface{
MyInterface(){
print("I am a inteface");
}
}
void main(){
BasicInterface obj = new BasicInterface();
obj.MyInterface();
}
|
Output:
Example of default class for an interface
|
interface Dartinterface default BasicInterface{
MyInterface();
Dartinterface();
}
class BasicInterface implements Dartinterface{
MyInterface(){
print("I am a inteface");
}
}
void main(){
//BasicInterface obj = new BasicInterface();
Dartinterface obj = new Dartinterface();
obj.MyInterface();
}
|
Output:
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