Which annotation do you use on line 1 to ensure that clients immediately time out when attempting to concurrently invoke callMethod () while another client is already accessing the bean?

Question

Options

• A@AccessTimeout (value = 1, unit = TimeUnit.SECONDS)
• B@AccessTimeout (null)
• C@AccessTimeout (-1)
• D@AccessTimeout (0)

• B
  6% (2)
• C
  3% (1)
• D
  90% (28)

Explanation

@AccessTimeout(0) tells the container to wait zero milliseconds before throwing a ConcurrentAccessTimeoutException, meaning any concurrent caller is rejected instantly without waiting. This is the only value that guarantees immediate timeout on contention.

Why the distractors are wrong:

• A (value = 1, unit = SECONDS) causes a 1-second wait before timing out - not immediate.
• B (null) is not valid syntax; @AccessTimeout requires a long value, so this won't compile.
• C (-1) is the opposite of D: it means wait forever (no timeout), allowing the client to block indefinitely until the bean is free.

Memory tip: Think of it as a number line - -1 = infinite patience, 0 = zero patience (bail immediately), positive values = wait that many units. For an instant rejection, you want 0.

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