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Showing content from https://docs.oracle.com/en/java/javase/19/docs/api/java.desktop/java/awt/geom/Point2D.html below:

Point2D (Java SE 19 & JDK 19)

All Implemented Interfaces:

Cloneable

Direct Known Subclasses:

Point, Point2D.Double, Point2D.Float

The

class defines a point representing a location in

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.

Since:

1.2

• Nested Class Summary

  Nested Classes

  static class 

  The Double class defines a point specified in double precision.

  static class 

  The Float class defines a point specified in float precision.

• Constructor Summary

  Constructors

  protected

  This is an abstract class that cannot be instantiated directly.

• Method Summary

  Creates a new object of the same class and with the same contents as this object.

  double

  Returns the distance from this Point2D to a specified point.

  static double

  distance(double x1, double y1, double x2, double y2)

  Returns the distance between two points.

  double

  Returns the distance from this Point2D to a specified Point2D.

  double

  Returns the square of the distance from this Point2D to a specified point.

  static double

  distanceSq(double x1, double y1, double x2, double y2)

  Returns the square of the distance between two points.

  double

  Returns the square of the distance from this Point2D to a specified Point2D.

  boolean

  Determines whether or not two points are equal.

  abstract double

  Returns the X coordinate of this Point2D in double precision.

  abstract double

  Returns the Y coordinate of this Point2D in double precision.

  int

  Returns the hashcode for this Point2D.

  abstract void

  Sets the location of this Point2D to the specified double coordinates.

  void

  Sets the location of this Point2D to the same coordinates as the specified Point2D object.

• Constructor Details
  • Point2D

    protected Point2D()

    This is an abstract class that cannot be instantiated directly. Type-specific implementation subclasses are available for instantiation and provide a number of formats for storing the information necessary to satisfy the various accessor methods below.

    Since:

    1.2

    See Also:

    • Point2D.Float
    • Point2D.Double
    • Point

• Method Details
  • getX

    public abstract double getX()

    Returns the X coordinate of this Point2D in double precision.

    Returns:

    the X coordinate of this Point2D.

    Since:

    1.2

  • getY

    public abstract double getY()

    Returns the Y coordinate of this Point2D in double precision.

    Returns:

    the Y coordinate of this Point2D.

    Since:

    1.2

  • setLocation

    public abstract void setLocation(double x, double y)

    Sets the location of this Point2D to the specified double coordinates.

    Parameters:

    x - the new X coordinate of this Point2D

    y - the new Y coordinate of this Point2D

    Since:

    1.2

  • setLocation

    Sets the location of this Point2D to the same coordinates as the specified Point2D object.

    Parameters:

    p - the specified Point2D to which to set this Point2D

    Since:

    1.2

  • distanceSq

    public static double distanceSq(double x1, double y1, double x2, double y2)

    Returns the square of the distance between two points.

    Parameters:

    x1 - the X coordinate of the first specified point

    y1 - the Y coordinate of the first specified point

    x2 - the X coordinate of the second specified point

    y2 - the Y coordinate of the second specified point

    Returns:

    the square of the distance between the two sets of specified coordinates.

    Since:

    1.2

  • distance

    public static double distance(double x1, double y1, double x2, double y2)

    Returns the distance between two points.

    Parameters:

    x1 - the X coordinate of the first specified point

    y1 - the Y coordinate of the first specified point

    x2 - the X coordinate of the second specified point

    y2 - the Y coordinate of the second specified point

    Returns:

    the distance between the two sets of specified coordinates.

    Since:

    1.2

  • distanceSq

    public double distanceSq(double px, double py)

    Returns the square of the distance from this Point2D to a specified point.

    Parameters:

    px - the X coordinate of the specified point to be measured against this Point2D

    py - the Y coordinate of the specified point to be measured against this Point2D

    Returns:

    the square of the distance between this Point2D and the specified point.

    Since:

    1.2

  • distanceSq public double distanceSq(Point2D pt)

    Returns the square of the distance from this Point2D to a specified Point2D.

    Parameters:

    pt - the specified point to be measured against this Point2D

    Returns:

    the square of the distance between this Point2D to a specified Point2D.

    Since:

    1.2

  • distance

    public double distance(double px, double py)

    Returns the distance from this Point2D to a specified point.

    Parameters:

    px - the X coordinate of the specified point to be measured against this Point2D

    py - the Y coordinate of the specified point to be measured against this Point2D

    Returns:

    the distance between this Point2D and a specified point.

    Since:

    1.2

  • distance

    Returns the distance from this Point2D to a specified Point2D.

    Parameters:

    pt - the specified point to be measured against this Point2D

    Returns:

    the distance between this Point2D and the specified Point2D.

    Since:

    1.2

  • clone

    Creates a new object of the same class and with the same contents as this object.

    Overrides:

    clone in class Object

    Returns:

    a clone of this instance.

    Throws:

    OutOfMemoryError - if there is not enough memory.

    Since:

    1.2

    See Also:

    • Cloneable

  • hashCode

    public int hashCode()

    Returns the hashcode for this Point2D.

    Overrides:

    hashCode in class Object

    Returns:

    a hash code for this Point2D.

    See Also:

    • Object.equals(java.lang.Object)
    • System.identityHashCode(java.lang.Object)

  • equals public boolean equals(Object obj)

    Determines whether or not two points are equal. Two instances of Point2D are equal if the values of their x and y member fields, representing their position in the coordinate space, are the same.

    Overrides:

    equals in class Object

    Parameters:

    obj - an object to be compared with this Point2D

    Returns:

    true if the object to be compared is an instance of Point2D and has the same values; false otherwise.

    Since:

    1.2

    See Also:

    • Object.hashCode()
    • HashMap

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