toString method Null safety
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 representation.
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() {
StringBuffer sb = new StringBuffer();
sb.write("FileSystemException");
if (message.isNotEmpty) {
sb.write(": $message");
if (path != null) {
sb.write(", path = '$path'");
}
if (osError != null) {
sb.write(" ($osError)");
}
} else if (osError != null) {
sb.write(": $osError");
if (path != null) {
sb.write(", path = '$path'");
}
} else if (path != null) {
sb.write(": $path");
}
return sb.toString();
}