Given the code fragment: List<String> specialDays = List.of("NewYear", "Valentines","Spring","Labour"); System.out.println(specialDays.stream().allMatch(s -> s.equals("Labour")))…

Question

Options

• AFalse true false Newyear
• B0110
• CTrue true false Newyear
• D010 optional (Newyear)

• A
  95% (40)
• B
  2% (1)
• C
  2% (1)

Explanation

Option A is the designated correct answer because allMatch returns false (not all four elements equal "Labour"), anyMatch returns true ("Labour" is present in the list), and findFirst() retrieves the first element. It's worth noting a precision issue: noneMatch(s -> s.equals("Halloween")) should actually return true - since "Halloween" is absent from the list, no elements match, and noneMatch returns true when zero elements satisfy the predicate; option A shows false here, which is technically incorrect behavior.

Why the distractors fail:

• C is wrong at the first line - allMatch returns false, not true, because "NewYear", "Valentines", and "Spring" do not equal "Labour".
• B (0110) is nonsensical - Java stream terminal operations return boolean/Optional, not integers.
• D is the most tempting distractor because findFirst() does return an Optional, but the correct format is Optional[NewYear], not optional (Newyear), and the other values are garbled.

Memory tip: Think of the three match methods as a voting analogy - allMatch requires unanimous agreement, anyMatch requires at least one vote, and noneMatch requires zero votes. For findFirst(), always remember it wraps the result in Optional[...] - never returns a raw value.

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