Class NumberUtil

java.lang.Object
org.drasyl.util.NumberUtil

public final class NumberUtil extends Object
Utility class for number-related operations.
  • Method Details

    • numberToHumanData

      public static String numberToHumanData(Number number, short precision, Locale locale)
      Takes a Number with bytes and returns it as a formatted SI (metric) multiple-byte number.

      Inspired by https://stackoverflow.com/a/3758880/1074188.

      Parameters:
      number - number containing size in bytes
      precision - Sets the precision of the number. Value -1 has a special meaning here: an absolute formatted number less then 10 results in precision 2; an absolute formatted number less then 100 results in precision 1; all other absolute formatted numbers result in precision 0
      locale - The locale to apply during formatting. If locale is null then no localization is applied.
      Returns:
      the formatted SI (metric) multiple-byte number
      Throws:
      IllegalArgumentException - if precision is less than -1
    • numberToHumanData

      public static String numberToHumanData(Number number, short precision)
      Takes a Number with bytes and returns it as a formatted SI (metric) multiple-byte number.
      Parameters:
      number - number containing size in bytes
      precision - Sets the precision of the number. Value -1 has a special meaning here: an absolute formatted number less then 10 results in precision 2; an absolute formatted number less then 100 results in precision 1; all other absolute formatted numbers result in precision 0
      Returns:
      the formatted SI (metric) multiple-byte number
      Throws:
      IllegalArgumentException - if precision is less than -1
    • numberToHumanData

      public static String numberToHumanData(Number number, Locale locale)
      Takes a Number with bytes and returns it as a formatted SI (metric) multiple-byte number.
      Parameters:
      number - number containing size in bytes
      locale - The locale to apply during formatting. If locale is null then no localization is applied.
      Returns:
      the formatted SI (metric) multiple-byte number
      Throws:
      IllegalArgumentException - if precision is less than -1
    • numberToHumanData

      public static String numberToHumanData(Number number)
      Takes a Number with bytes and returns it as a formatted SI (metric) multiple-byte number.
      Parameters:
      number - number containing size in bytes
      Returns:
      the formatted SI (metric) multiple-byte number
      Throws:
      IllegalArgumentException - if precision is less than -1
    • numberToHumanDataRate

      public static String numberToHumanDataRate(Number number, short precision, Locale locale)
      Takes a Number with bytes and returns it as a formatted SI (metric) data-rate.

      Inspired by https://stackoverflow.com/a/3758880/1074188.

      Parameters:
      number - number containing size in bytes
      precision - Sets the precision of the number. Value -1 has a special meaning here: an absolute formatted number less then 10 results in precision 2; an absolute formatted number less then 100 results in precision 1; all other absolute formatted numbers result in precision 0
      locale - The locale to apply during formatting. If locale is null then no localization is applied.
      Returns:
      the formatted SI (metric) data-rate
      Throws:
      IllegalArgumentException - if precision is less than -1
    • numberToHumanDataRate

      public static String numberToHumanDataRate(Number number, short precision)
      Takes a Number with bytes and returns it as a formatted SI (metric) data-rate.
      Parameters:
      number - number containing size in bytes
      precision - Sets the precision of the number. Value -1 has a special meaning here: an absolute formatted number less then 10 results in precision 2; an absolute formatted number less then 100 results in precision 1; all other absolute formatted numbers result in precision 0
      Returns:
      the formatted SI (metric) data-rate
      Throws:
      IllegalArgumentException - if precision is less than -1
    • numberToHumanDataRate

      public static String numberToHumanDataRate(Number number, Locale locale)
      Takes a Number with bytes and returns it as a formatted SI (metric) data-rate.
      Parameters:
      number - number containing size in bytes
      locale - The locale to apply during formatting. If locale is null then no localization is applied.
      Returns:
      the formatted SI (metric) data-rate
      Throws:
      IllegalArgumentException - if precision is less than -1
    • numberToHumanDataRate

      public static String numberToHumanDataRate(Number number)
      Takes a Number with bytes and returns it as a formatted SI (metric) data-rate.
      Parameters:
      number - number containing size in bytes
      Returns:
      the formatted SI (metric) data-rate
      Throws:
      IllegalArgumentException - if precision is less than -1
    • sampleVariance

      public static double sampleVariance(double... values)
      Returns the unbiased sample variance of given values.
    • sampleStandardDeviation

      public static double sampleStandardDeviation(double... values)
      Returns the corrected sample standard deviation of given values.