Which one of the following is not a valid Javadoc tag?
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@author
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{@link}
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@serialField
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@arg
To answer this question, the user needs to know about Javadoc tags and their purpose in documenting Java code.
Now, let's go through each option and explain why it is right or wrong:
A. @author: This is a valid Javadoc tag that is used to indicate the author of the code or the documentation.
B. {@link}: This is a valid Javadoc tag that is used to create a hyperlink to another class, method, or field in the code documentation.
C. @serialField: This is a valid Javadoc tag that is used to document the fields of a serializable class.
D. @arg: This is not a valid Javadoc tag. The correct Javadoc tag for documenting method arguments is @param.
Therefore, the answer is:
The Answer is: D. @arg
@arg is not a real Javadoc tag — the correct tag for documenting a method parameter is @param. @author (documents the class author), {@link} (creates an inline hyperlink to another class/member), and @serialField (documents a field of a Serializable class for its serialized form) are all valid, standard Javadoc tags. Since the question asks which is NOT valid, @arg is the correct answer.