Class Fraction

java.lang.Object
EDU.oswego.cs.dl.util.concurrent.misc.Fraction
All Implemented Interfaces:
Serializable, Cloneable, Comparable
public class Fraction extends Object implements Cloneable, Comparable, Serializable
An immutable class representing fractions as pairs of longs. Fractions are always maintained in reduced form.
See Also:

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    protected final long
    denominator_
     
    protected final long
    numerator_
     

  • Constructor Summary

    Constructors
    Constructor
    Description
    Fraction(long num, long den)
    Create a Fraction equal in value to num / den
    Fraction(Fraction f)
    Create a fraction with the same value as Fraction f

  • Method Summary

    Modifier and Type
    Method
    Description
    double
    asDouble()
    Return the value of the Fraction as a double
    Object
    clone()
     
    int
    compareTo(long n)
    return a number less, equal, or greater than zero reflecting whether this Fraction is less, equal or greater than n.
    int
    compareTo(Object other)
    return a number less, equal, or greater than zero reflecting whether this Fraction is less, equal or greater than the value of Fraction other.
    final long
    denominator()
    Return the denominator
    Fraction
    dividedBy(long n)
    return a Fraction representing this Fraction divided by n
    Fraction
    dividedBy(Fraction b)
    return a Fraction representing this Fraction divided by b
    boolean
    equals(long n)
     
    boolean
    equals(Object other)
     
    static long
    gcd(long a, long b)
    Compute the nonnegative greatest common divisor of a and b.
    int
    hashCode()
     
    Fraction
    inverse()
    return a Fraction representing 1 / this Fraction
    Fraction
    minus(long n)
    return a Fraction representing this Fraction minus n
    Fraction
    minus(Fraction b)
    return a Fraction representing this Fraction minus b
    Fraction
    negative()
    return a Fraction representing the negated value of this Fraction
    final long
    numerator()
    Return the numerator
    Fraction
    plus(long n)
    return a Fraction representing this Fraction plus n
    Fraction
    plus(Fraction b)
    return a Fraction representing this Fraction plus b
    Fraction
    times(long n)
    return a Fraction representing this Fraction times n
    Fraction
    times(Fraction b)
    return a Fraction representing this Fraction times b
    String
    toString()
     

    Methods inherited from class Object

    finalize, getClass, notify, notifyAll, wait, wait, wait

  • Field Details

    • numerator_

      protected final long numerator_

    • denominator_

      protected final long denominator_

  • Constructor Details

    • Fraction

      public Fraction(long num, long den)
      Create a Fraction equal in value to num / den

    • Fraction

      public Fraction(Fraction f)
      Create a fraction with the same value as Fraction f

  • Method Details

    • numerator

      public final long numerator()
      Return the numerator

    • denominator

      public final long denominator()
      Return the denominator

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • clone

      public Object clone()
      Overrides:
      clone in class Object

    • asDouble

      public double asDouble()
      Return the value of the Fraction as a double

    • gcd

      public static long gcd(long a, long b)
      Compute the nonnegative greatest common divisor of a and b. (This is needed for normalizing Fractions, but can be useful on its own.)

    • negative

      public Fraction negative()
      return a Fraction representing the negated value of this Fraction

    • inverse

      public Fraction inverse()
      return a Fraction representing 1 / this Fraction

    • plus

      public Fraction plus(Fraction b)
      return a Fraction representing this Fraction plus b

    • plus

      public Fraction plus(long n)
      return a Fraction representing this Fraction plus n

    • minus

      public Fraction minus(Fraction b)
      return a Fraction representing this Fraction minus b

    • minus

      public Fraction minus(long n)
      return a Fraction representing this Fraction minus n

    • times

      public Fraction times(Fraction b)
      return a Fraction representing this Fraction times b

    • times

      public Fraction times(long n)
      return a Fraction representing this Fraction times n

    • dividedBy

      public Fraction dividedBy(Fraction b)
      return a Fraction representing this Fraction divided by b

    • dividedBy

      public Fraction dividedBy(long n)
      return a Fraction representing this Fraction divided by n

    • compareTo

      public int compareTo(Object other)
      return a number less, equal, or greater than zero reflecting whether this Fraction is less, equal or greater than the value of Fraction other.
      Specified by:
      compareTo in interface Comparable

    • compareTo

      public int compareTo(long n)
      return a number less, equal, or greater than zero reflecting whether this Fraction is less, equal or greater than n.

    • equals

      public boolean equals(Object other)
      Overrides:
      equals in class Object

    • equals

      public boolean equals(long n)

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object