Package org.instancio.internal.random

Class RandomProviderImpl

java.lang.Object
org.instancio.internal.random.RandomProviderImpl
All Implemented Interfaces:
RandomProvider
public class RandomProviderImpl extends Object implements RandomProvider

  • Constructor Details

    • RandomProviderImpl

      public RandomProviderImpl()
      Create an instance with a random seed value.

    • RandomProviderImpl

      public RandomProviderImpl(int seed)
      Create an instance with the given seed value.
      Parameters:
      seed - for the random generator

  • Method Details

    • getSeed

      public int getSeed()
      Description copied from interface: RandomProvider
      Returns the seed value used by the random number generator.
      Specified by:
      getSeed in interface RandomProvider
      Returns:
      seed value

    • trueOrFalse

      public boolean trueOrFalse()
      Specified by:
      trueOrFalse in interface RandomProvider
      Returns:
      a random true or false value with a 0.5 probability.

    • diceRoll

      public boolean diceRoll(boolean precondition)
      Specified by:
      diceRoll in interface RandomProvider
      Parameters:
      precondition - required for returning true value
      Returns:
      a random true with 1/6 probability.

    • byteRange

      public byte byteRange(byte min, byte max)
      Specified by:
      byteRange in interface RandomProvider
      Parameters:
      min - lower bound
      max - upper bound (exclusive)
      Returns:
      a random byte between the min and max, exclusive

    • shortRange

      public short shortRange(short min, short max)
      Specified by:
      shortRange in interface RandomProvider
      Parameters:
      min - lower bound
      max - upper bound (exclusive)
      Returns:
      a random short between the min and max, exclusive

    • intRange

      public int intRange(int min, int max)
      Specified by:
      intRange in interface RandomProvider
      Parameters:
      min - lower bound
      max - upper bound (exclusive)
      Returns:
      a random int between the min and max, exclusive

    • longRange

      public long longRange(long min, long max)
      Specified by:
      longRange in interface RandomProvider
      Parameters:
      min - lower bound
      max - upper bound (exclusive)
      Returns:
      a random long between the min and max, exclusive

    • floatRange

      public float floatRange(float min, float max)
      Specified by:
      floatRange in interface RandomProvider
      Parameters:
      min - lower bound
      max - upper bound (exclusive)
      Returns:
      a random float between the min and max, exclusive

    • doubleRange

      public double doubleRange(double min, double max)
      Specified by:
      doubleRange in interface RandomProvider
      Parameters:
      min - lower bound
      max - upper bound (exclusive)
      Returns:
      a random double between the min and max, exclusive

    • character

      public char character()
      Description copied from interface: RandomProvider
      Returns a random alphabetic character, [a-z, A-Z].
      Specified by:
      character in interface RandomProvider
      Returns:
      random character, either lower or upper case

    • lowerCaseCharacter

      public char lowerCaseCharacter()
      Description copied from interface: RandomProvider
      Returns a random lower alphabetic character, [a-z].
      Specified by:
      lowerCaseCharacter in interface RandomProvider
      Returns:
      random lower character

    • upperCaseCharacter

      public char upperCaseCharacter()
      Description copied from interface: RandomProvider
      Returns a random upper alphabetic character, [A-Z].
      Specified by:
      upperCaseCharacter in interface RandomProvider
      Returns:
      random uppercase character

    • lowerCaseAlphabetic

      public String lowerCaseAlphabetic(int length)
      Description copied from interface: RandomProvider
      Generates a lower case String comprised of [a-z].
      Specified by:
      lowerCaseAlphabetic in interface RandomProvider
      Parameters:
      length - of a string to generate
      Returns:
      random lower case String with given length

    • upperCaseAlphabetic

      public String upperCaseAlphabetic(int length)
      Description copied from interface: RandomProvider
      Generates a random upper case String comprised of [A-Z].
      Specified by:
      upperCaseAlphabetic in interface RandomProvider
      Parameters:
      length - of a string to generate
      Returns:
      random upper case String with given length

    • digits

      public String digits(int length)
      Description copied from interface: RandomProvider
      Generates a random String comprised of digits [0-9].
      Specified by:
      digits in interface RandomProvider
      Parameters:
      length - of a string to generate
      Returns:
      random String comprised of digits with given length

    • alphaNumeric

      public String alphaNumeric(int length)
      Description copied from interface: RandomProvider
      Generates a random alphanumeric String comprised of [a-z, A-Z, 0-9].
      Specified by:
      alphaNumeric in interface RandomProvider
      Parameters:
      length - of a string to generate
      Returns:
      random alphanumeric String with given length

    • mixedCaseAlphabetic

      public String mixedCaseAlphabetic(int length)
      Description copied from interface: RandomProvider
      Generates a random mixed case String comprised of [a-z, A-Z].
      Specified by:
      mixedCaseAlphabetic in interface RandomProvider
      Parameters:
      length - of a string to generate
      Returns:
      random mixed case String with given length

    • oneOf

      public <T> T oneOf(T[] array)
      Description copied from interface: RandomProvider
      Returns a random element from given array.
      Specified by:
      oneOf in interface RandomProvider
      Type Parameters:
      T - element type
      Parameters:
      array - to pick a value from
      Returns:
      random element

    • oneOf

      public <T> T oneOf(Collection<T> collection)
      Description copied from interface: RandomProvider
      Returns a random element from given collection.
      Specified by:
      oneOf in interface RandomProvider
      Type Parameters:
      T - element type
      Parameters:
      collection - to pick a value from
      Returns:
      random element