Java Math Class Methods Flashcards
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Questions and Answers

What does the method abs() do?

  • Returns the larger value of x and y
  • Rounds down
  • Rounds to the nearest whole number
  • Returns the absolute value (correct)
  • What is the purpose of the round() method?

  • Rounds to the nearest whole number (correct)
  • Rounds down
  • Returns a double in the range [0, 1.0)
  • Rounds up
  • What does the ceil() method do?

  • Returns the square root
  • Rounds up (correct)
  • Returns the smaller value of x and y
  • Rounds down
  • What is the function of the floor() method?

    <p>Rounds down</p> Signup and view all the answers

    What does max(x, y) return?

    <p>Returns the larger value of x and y</p> Signup and view all the answers

    What is the purpose of the min(x, y) method?

    <p>Returns the smaller value of x and y</p> Signup and view all the answers

    What does the pow(x, y) method calculate?

    <p>Returns x to the power of y</p> Signup and view all the answers

    What does the random() method return?

    <p>Returns a double in the range [0, 1.0)</p> Signup and view all the answers

    What is the function of the sqrt() method?

    <p>Returns the square root</p> Signup and view all the answers

    Study Notes

    Java Math Class Methods

    • abs(): Computes the absolute value of a number, ensuring all results are non-negative.
    • round(): Rounds a floating-point number to the nearest whole integer, using standard rounding rules.
    • ceil(): Always rounds a number up to the nearest whole number, regardless of its decimal value.
    • floor(): Always rounds a number down to the nearest whole number, effectively discarding the decimal part.
    • max(x, y): Compares two values and returns the greater of the two, useful for finding maximum values.
    • min(x, y): Compares two values and returns the smaller of the two, ideal for identifying minimum values.
    • pow(x, y): Raises a number x to the power of y, allowing calculations of exponentiation.
    • random(): Generates and returns a double value that falls within the range [0.0, 1.0), providing a basis for random number generation.
    • sqrt(): Calculates and returns the square root of a given number, essential for various mathematical operations.

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    Description

    Test your knowledge of Java's Math class methods with these flashcards. Each card presents a method and its definition, helping you understand how to use absolute values, rounding, and finding maximum and minimum values. Perfect for Java programming students!

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