Add a Setter to a Generic Box

Complete the setItem method so the generic Box<T> object can update its stored value after it is created. The constructor and getItem are already provided.

IMPORTANT: Do NOT write a main method. A hidden test will create boxes, call setItem to replace the stored value, then verify the updated value using getItem().

Expected Output:

Updated↵
99↵

= newline. The output ends with a newline — print one after the last line.

Hints2 available

Topics:

GenericsClasses

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