Package org.jfree.data.xy

Class XYDataItem

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Cloneable, java.lang.Comparable
    public class XYDataItem
extends java.lang.Object
implements java.lang.Cloneable, java.lang.Comparable, java.io.Serializable
    Represents one (x, y) data item for an XYSeries. Note that subclasses are REQUIRED to support cloning.
    See Also:
    Serialized Form

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private static long serialVersionUID
      For serialization.
      private java.lang.Number x
      The x-value (null not permitted).
      private java.lang.Number y
      The y-value.

    • Constructor Summary

      Constructors 
      Constructor Description
      XYDataItem​(double x, double y)
      Constructs a new data item.
      XYDataItem​(java.lang.Number x, java.lang.Number y)
      Constructs a new data item.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.lang.Object clone()
      Returns a clone of this object.
      int compareTo​(java.lang.Object o1)
      Returns an integer indicating the order of this object relative to another object.
      boolean equals​(java.lang.Object obj)
      Tests if this object is equal to another.
      java.lang.Number getX()
      Returns the x-value.
      double getXValue()
      Returns the x-value as a double primitive.
      java.lang.Number getY()
      Returns the y-value.
      double getYValue()
      Returns the y-value as a double primitive.
      int hashCode()
      Returns a hash code.
      void setY​(double y)
      Sets the y-value for this data item.
      void setY​(java.lang.Number y)
      Sets the y-value for this data item.
      java.lang.String toString()
      Returns a string representing this instance, primarily for debugging use.

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • serialVersionUID

        private static final long serialVersionUID
        For serialization.
        See Also:
        Constant Field Values

      • x

        private java.lang.Number x
        The x-value (null not permitted).

      • y

        private java.lang.Number y
        The y-value.

    • Constructor Detail

      • XYDataItem

        public XYDataItem​(java.lang.Number x,
                  java.lang.Number y)
        Constructs a new data item.
        Parameters:
        x - the x-value (null NOT permitted).
        y - the y-value (null permitted).

      • XYDataItem

        public XYDataItem​(double x,
                  double y)
        Constructs a new data item.
        Parameters:
        x - the x-value.
        y - the y-value.

    • Method Detail

      • getX

        public java.lang.Number getX()
        Returns the x-value.
        Returns:
        The x-value (never null).

      • getXValue

        public double getXValue()
        Returns the x-value as a double primitive.
        Returns:
        The x-value.
        See Also:
        getX(), getYValue()

      • getY

        public java.lang.Number getY()
        Returns the y-value.
        Returns:
        The y-value (possibly null).

      • getYValue

        public double getYValue()
        Returns the y-value as a double primitive.
        Returns:
        The y-value.
        See Also:
        getY(), getXValue()

      • setY

        public void setY​(double y)
        Sets the y-value for this data item. Note that there is no corresponding method to change the x-value.
        Parameters:
        y - the new y-value.

      • setY

        public void setY​(java.lang.Number y)
        Sets the y-value for this data item. Note that there is no corresponding method to change the x-value.
        Parameters:
        y - the new y-value (null permitted).

      • compareTo

        public int compareTo​(java.lang.Object o1)
        Returns an integer indicating the order of this object relative to another object.

        For the order we consider only the x-value: negative == "less-than", zero == "equal", positive == "greater-than".

        Specified by:
        compareTo in interface java.lang.Comparable
        Parameters:
        o1 - the object being compared to.
        Returns:
        An integer indicating the order of this data pair object relative to another object.

      • clone

        public java.lang.Object clone()
        Returns a clone of this object.
        Overrides:
        clone in class java.lang.Object
        Returns:
        A clone.

      • equals

        public boolean equals​(java.lang.Object obj)
        Tests if this object is equal to another.
        Overrides:
        equals in class java.lang.Object
        Parameters:
        obj - the object to test against for equality (null permitted).
        Returns:
        A boolean.

      • hashCode

        public int hashCode()
        Returns a hash code.
        Overrides:
        hashCode in class java.lang.Object
        Returns:
        A hash code.

      • toString

        public java.lang.String toString()
        Returns a string representing this instance, primarily for debugging use.
        Overrides:
        toString in class java.lang.Object
        Returns:
        A string.