What is a bounded type parameter in Java generics?Select one:a. A type parameter with both an upper and lower boundb. A type parameter without any boundsc. A type parameter with a specific upper boundd. A type parameter with a specific lower bound
Question
What is a bounded type parameter in Java generics?Select one:a. A type parameter with both an upper and lower boundb. A type parameter without any boundsc. A type parameter with a specific upper boundd. A type parameter with a specific lower bound
Solution 1
The correct answer is c. A type parameter with a specific upper bound. In Java generics, a bounded type parameter is one that has a specific upper bound. This means that it must either be of a specific type or a subtype of that type. This is used to restrict the types that can be used with a generic class or method. For example, if you have a method that operates on numbers, you can use a bounded type parameter to ensure that only Number or its subclasses can be passed to that method.
Solution 2
The correct answer is c. A type parameter with a specific upper bound.
In Java generics, a bounded type parameter is one that has a specific upper bound. This means that it must either be of a specific type or a subtype of that type. This is done using the extends keyword. For example, in the declaration <T extends Number>, T is a bounded type parameter because it must be a Number or a subclass of Number.
Options a, b, and d are incorrect. Java does not support lower bounds or both upper and lower bounds for type parameters. A type parameter without any bounds is not considered a bounded type parameter.
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