Identify two Java reserved words.

Question

Options

• Aarray
• Btrue
• Cthis
• Dexception

• A
  3% (1)
• B
  88% (30)
• C
  6% (2)
• D
  3% (1)

Explanation

true is a Java reserved literal - along with false and null, it is built into the language specification and cannot be used as an identifier. Notably, this (C) is also a Java reserved word (it references the current object instance), so the full correct answer to "identify two" is B and C.

The distractors work like this: array (A) is not a Java keyword - Java uses bracket syntax (int[]) rather than a dedicated array keyword, unlike some other languages. exception (D) is not reserved either; the relevant Java class is Exception (capitalized), which is a standard library class, not a language keyword.

Memory tip: If you can use it as a variable name without a compile error, it's not a reserved word. Try int true = 1; - the compiler rejects it immediately, confirming true is reserved. A quick mental check: Java's reserved words appear in most IDE editors highlighted in bold or a distinct color.

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