public abstract class Point2D extends Object implements Cloneable
Point2D class defines a point representing a location
 in (x,y) coordinate space.
 This class is only the abstract superclass for all objects that store a 2D coordinate. The actual storage representation of the coordinates is left to the subclass.
| Modifier and Type | Class and Description | 
|---|---|
| static class  | Point2D.DoubleThe  Doubleclass defines a point specified indoubleprecision. | 
| static class  | Point2D.FloatThe  Floatclass defines a point specified in float
 precision. | 
| Modifier | Constructor and Description | 
|---|---|
| protected  | Point2D()This is an abstract class that cannot be instantiated directly. | 
| Modifier and Type | Method and Description | 
|---|---|
| Object | clone()Creates a new object of the same class and with the
 same contents as this object. | 
| double | distance(double px,
        double py)Returns the distance from this  Point2Dto
 a specified point. | 
| static double | distance(double x1,
        double y1,
        double x2,
        double y2)Returns the distance between two points. | 
| double | distance(Point2D pt)Returns the distance from this  Point2Dto a
 specifiedPoint2D. | 
| double | distanceSq(double px,
          double py)Returns the square of the distance from this
  Point2Dto a specified point. | 
| static double | distanceSq(double x1,
          double y1,
          double x2,
          double y2)Returns the square of the distance between two points. | 
| double | distanceSq(Point2D pt)Returns the square of the distance from this
  Point2Dto a specifiedPoint2D. | 
| boolean | equals(Object obj)Determines whether or not two points are equal. | 
| abstract double | getX()Returns the X coordinate of this  Point2Dindoubleprecision. | 
| abstract double | getY()Returns the Y coordinate of this  Point2Dindoubleprecision. | 
| int | hashCode()Returns the hashcode for this  Point2D. | 
| abstract void | setLocation(double x,
           double y)Sets the location of this  Point2Dto the
 specifieddoublecoordinates. | 
| void | setLocation(Point2D p)Sets the location of this  Point2Dto the same
 coordinates as the specifiedPoint2Dobject. | 
protected Point2D()
Point2D.Float, 
Point2D.Double, 
Pointpublic abstract double getX()
Point2D in
 double precision.Point2D.public abstract double getY()
Point2D in
 double precision.Point2D.public abstract void setLocation(double x,
                                 double y)
Point2D to the
 specified double coordinates.x - the new X coordinate of this Point2Dy - the new Y coordinate of this Point2Dpublic void setLocation(Point2D p)
Point2D to the same
 coordinates as the specified Point2D object.p - the specified Point2D to which to set
 this Point2Dpublic static double distanceSq(double x1,
                                double y1,
                                double x2,
                                double y2)
x1 - the X coordinate of the first specified pointy1 - the Y coordinate of the first specified pointx2 - the X coordinate of the second specified pointy2 - the Y coordinate of the second specified pointpublic static double distance(double x1,
                              double y1,
                              double x2,
                              double y2)
x1 - the X coordinate of the first specified pointy1 - the Y coordinate of the first specified pointx2 - the X coordinate of the second specified pointy2 - the Y coordinate of the second specified pointpublic double distanceSq(double px,
                         double py)
Point2D to a specified point.px - the X coordinate of the specified point to be measured
           against this Point2Dpy - the Y coordinate of the specified point to be measured
           against this Point2DPoint2D and the specified point.public double distanceSq(Point2D pt)
Point2D to a specified Point2D.pt - the specified point to be measured
           against this Point2DPoint2D to a specified Point2D.public double distance(double px,
                       double py)
Point2D to
 a specified point.px - the X coordinate of the specified point to be measured
           against this Point2Dpy - the Y coordinate of the specified point to be measured
           against this Point2DPoint2D
 and a specified point.public double distance(Point2D pt)
Point2D to a
 specified Point2D.pt - the specified point to be measured
           against this Point2DPoint2D and
 the specified Point2D.public Object clone()
clone in class ObjectOutOfMemoryError - if there is not enough memory.Cloneablepublic int hashCode()
Point2D.hashCode in class ObjectPoint2D.Object.equals(java.lang.Object), 
System.identityHashCode(java.lang.Object)public boolean equals(Object obj)
Point2D are equal if the values of their
 x and y member fields, representing
 their position in the coordinate space, are the same.equals in class Objectobj - an object to be compared with this Point2Dtrue if the object to be compared is
         an instance of Point2D and has
         the same values; false otherwise.Object.hashCode(), 
HashMap Submit a bug or feature 
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