HashUtilities
org.jfree.chart

Class HashUtilities



  • public class HashUtilitiesextends Object
    Some utility methods for calculating hash codes.
    • Constructor Summary

      Constructors 
      Constructor and Description
      HashUtilities() 
    • Method Summary

      Methods 
      Modifier and TypeMethod and Description
      static inthashCode(int pre, boolean b)
      Returns a hash value based on a seed value and the value of a boolean primitive.
      static inthashCode(int pre, org.jfree.util.BooleanList list)
      Computes a hash code for a BooleanList.
      static inthashCode(int pre, Comparable c)
      Returns a hash value based on a seed value and a Comparable instance.
      static inthashCode(int pre, double d)
      Returns a hash value based on a seed value and the value of a double primitive.
      static inthashCode(int pre, int i)
      Returns a hash value based on a seed value and the value of an int primitive.
      static inthashCode(int pre, Object obj)
      Returns a hash value based on a seed value and an Object instance.
      static inthashCode(int pre, Paint p)
      Returns a hash value based on a seed value and a paint instance.
      static inthashCode(int pre, org.jfree.util.PaintList list)
      Computes a hash code for a PaintList.
      static inthashCode(int pre, String s)
      Returns a hash value based on a seed value and a string instance.
      static inthashCode(int pre, Stroke s)
      Returns a hash value based on a seed value and a stroke instance.
      static inthashCode(int pre, org.jfree.util.StrokeList list)
      Computes a hash code for a StrokeList.
      static inthashCodeForDoubleArray(double[] a)
      Returns a hash code for a double[] instance.
      static inthashCodeForPaint(Paint p)
      Returns a hash code for a Paint instance.
    • Constructor Detail

      • HashUtilities

        public HashUtilities()
    • Method Detail

      • hashCodeForPaint

        public static int hashCodeForPaint(Paint p)
        Returns a hash code for a Paint instance. If p is null, this method returns zero.
        Parameters:
        p - the paint (null permitted).
        Returns:
        The hash code.
      • hashCodeForDoubleArray

        public static int hashCodeForDoubleArray(double[] a)
        Returns a hash code for a double[] instance. If the array is null, this method returns zero.
        Parameters:
        a - the array (null permitted).
        Returns:
        The hash code.
      • hashCode

        public static int hashCode(int pre,           boolean b)
        Returns a hash value based on a seed value and the value of a boolean primitive.
        Parameters:
        pre - the seed value.
        b - the boolean value.
        Returns:
        A hash value.
      • hashCode

        public static int hashCode(int pre,           int i)
        Returns a hash value based on a seed value and the value of an int primitive.
        Parameters:
        pre - the seed value.
        i - the int value.
        Returns:
        A hash value.
      • hashCode

        public static int hashCode(int pre,           double d)
        Returns a hash value based on a seed value and the value of a double primitive.
        Parameters:
        pre - the seed value.
        d - the double value.
        Returns:
        A hash value.
      • hashCode

        public static int hashCode(int pre,           Paint p)
        Returns a hash value based on a seed value and a paint instance.
        Parameters:
        pre - the seed value.
        p - the paint (null permitted).
        Returns:
        A hash value.
      • hashCode

        public static int hashCode(int pre,           Stroke s)
        Returns a hash value based on a seed value and a stroke instance.
        Parameters:
        pre - the seed value.
        s - the stroke (null permitted).
        Returns:
        A hash value.
      • hashCode

        public static int hashCode(int pre,           String s)
        Returns a hash value based on a seed value and a string instance.
        Parameters:
        pre - the seed value.
        s - the string (null permitted).
        Returns:
        A hash value.
      • hashCode

        public static int hashCode(int pre,           Comparable c)
        Returns a hash value based on a seed value and a Comparable instance.
        Parameters:
        pre - the seed value.
        c - the comparable (null permitted).
        Returns:
        A hash value.
      • hashCode

        public static int hashCode(int pre,           Object obj)
        Returns a hash value based on a seed value and an Object instance.
        Parameters:
        pre - the seed value.
        obj - the object (null permitted).
        Returns:
        A hash value.
      • hashCode

        public static int hashCode(int pre,           org.jfree.util.BooleanList list)
        Computes a hash code for a BooleanList. In the latest version of JCommon, the BooleanList class should implement the hashCode() method correctly, but we compute it here anyway so that we can work with older versions of JCommon (back to 1.0.0).
        Parameters:
        pre - the seed value.
        list - the list (null permitted).
        Returns:
        The hash code.
      • hashCode

        public static int hashCode(int pre,           org.jfree.util.PaintList list)
        Computes a hash code for a PaintList. In the latest version of JCommon, the PaintList class should implement the hashCode() method correctly, but we compute it here anyway so that we can work with older versions of JCommon (back to 1.0.0).
        Parameters:
        pre - the seed value.
        list - the list (null permitted).
        Returns:
        The hash code.
      • hashCode

        public static int hashCode(int pre,           org.jfree.util.StrokeList list)
        Computes a hash code for a StrokeList. In the latest version of JCommon, the StrokeList class should implement the hashCode() method correctly, but we compute it here anyway so that we can work with older versions of JCommon (back to 1.0.0).
        Parameters:
        pre - the seed value.
        list - the list (null permitted).
        Returns:
        The hash code.

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