1. Dart
2. dart:core
3. StringSink
4. writeln abstract method

##### StringSink class

1. Constructors
2. StringSink
3. Properties
4. hashCode
5. runtimeType
6. Methods
7. write
8. writeAll
9. writeCharCode
10. writeln
11. noSuchMethod
12. toString
13. Operators
14. operator ==

# writeln method

void writeln ([Object obj = "" ])

Converts `obj` to a String by invoking Object.toString and adds the result to `this`, followed by a newline.

## Implementation

    void writeln([Object obj = ""]);