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3 September, 05:28

Which of the following statements is false?

A. Because a wildcard is a type-parameter name, you can use it as a type name throughout a method's body.

B. A wildcard-type argument is denoted by?,

C. which represents an "unknown type." If a wildcard is specified without an upper bound, then only the methods of type Object can be invoked on values of the wildcard type.

D. Wildcard type arguments enable you to specify method parameters, return values, variables, and so on, that act as supertypes of parameterized types.

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  1. 3 September, 09:01
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    The correct option to the following question is A.).

    Explanation:

    The following statement is false because,

    We cannot use as the type-name throughout the function's body. That's why the Wildcard type argument is referred to as the unknown types arguments and it acts as the placeholders for a real argument that are pass during the calling of the function. A wildcard arguments are denoted by the Question mark (?).
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