Dart abstract class property

To make a method abstract, use a semicolon (;) instead of the method body.

To make a method abstract, use a semicolon (;) instead of the method body.

The only difference is that the classes we’re using as interfaces don’t have the abstract keyword so one() and two() must have a body (it’s empty, but it’s still there).

The only difference is that the classes we’re using as interfaces don’t have the abstract keyword so one() and two() must have a body (it’s empty, but it’s still there).

An Abstract class in Dart is defined for those classes which contain one or more than one abstract method (methods without implementation) in them . Whereas, to declare abstract class we make use of the abstract keyword.2 Eyl 2020