Package org.testng.annotations
Annotation Type Optional
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@Retention(RUNTIME) @Target(PARAMETER) public @interface Optional
Specifies that the current parameter is optional. TestNG will pass in a specified default value, ornull
if none is specified.
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Optional Element Summary
Optional Elements Modifier and Type Optional Element Description java.lang.String
value
The default value to pass to this parameter.
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Element Detail
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value
java.lang.String value
The default value to pass to this parameter.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 passnull
to your code, and not the string "null", if you do not specify a default value here in this parameter.- Returns:
- the value (default NULL_VALUE)
- Default:
- "null"
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