toString method Null safety

String toString ()
override

A string representation of this object.

Some classes have a default textual representation, often paired with a static parse function (like int.parse). These classes will provide the textual representation as their string represetion.

Other classes have no meaningful textual representation that a program will care about. Such classes will typically override toString to provide useful information when inspecting the object, mainly for debugging or logging.

Implementation

String toString() {
  var b = new StringBuffer()..write('HttpException: ')..write(message);
  var uri = this.uri;
  if (uri != null) {
    b.write(', uri = $uri');
  }
  return b.toString();
}