Given the declaration: @interface Resource { String name(); int priority() default 0; } Examine this code fragment: / Loc1 / /* class ProcessOrders { ... } Which two annotations may be applied at…

Question

Options

• A@Resource(proxy=100)
• B@Resource(lookup="")
• C@Resource(name="Customer1", priority=100)
• D@Resource(name="Customer1")
• E@Resource

• A
  4% (1)
• B
  4% (1)
• C
  77% (20)
• E
  15% (4)

Explanation

Options C and D are valid because the @Resource annotation declares two elements: name() with no default (making it required) and priority() with default 0 (making it optional). Both C and D supply the required name element and use only declared element names - C explicitly sets both, while D omits priority and lets it fall back to its default of 0.

Why the distractors fail:

• A (proxy=100) and B (lookup="") reference element names (proxy, lookup) that simply don't exist in the @interface declaration - using undeclared elements is a compile error.
• E (@Resource with no elements) omits the required name() element, which has no default, so the compiler will reject it.

Memory tip: Think of annotation elements like method parameters with defaults - if an element has no default, it's mandatory. Also, you can never "invent" new element names; the annotation type is a contract and only its declared names are legal.

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