@Retention(value=RUNTIME)
@Target(value=PARAMETER)
public @interface Optional
null
if none is specified.Modifier and Type | Optional Element and Description |
---|---|
java.lang.String |
value
The default value to pass to this parameter.
|
public abstract java.lang.String value
The default deserves
a bit of explanation. JSR-175 (which defines annotations) says that
Java annotation parameters can only be ConstantExpressions, which
can be primitive/string literals, but not null
.
In this case, we use this string as a substitute
for null
; in practice, TestNG will pass null
to your code, and not the string "null", if you do not specify
a default value here in this parameter.