Mastering Java: The Ultimate Quiz for 'Thinking in Java'

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What does the NOT (!) logical operator do to its boolean argument?

  1. Inverts the value

  2. Sets it to false

  3. Increments the value

  4. Decreases the value

The correct answer is: Inverts the value

The NOT logical operator inverses the boolean value of its argument. This means that if the argument is true, the result will be false, and vice versa. Options B, C, and D are incorrect because they do not involve inverting the value of the boolean argument. Setting it to false, incrementing or decreasing the value are all different operations that do not result in inversion.

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