Module java.desktop
Package java.awt

Class Point

java.lang.Object
java.awt.geom.Point2D
java.awt.Point
All Implemented Interfaces:
Serializable, Cloneable
public class Point
extends Point2D
implements Serializable
A point representing a location in (x,y) coordinate space, specified in integer precision.
Since:
1.0
See Also:
Serialized Form

  • Nested Class Summary

    Nested classes/interfaces declared in class java.awt.geom.Point2D

    Point2D.Double, Point2D.Float

  • Field Summary

    Fields 
    Modifier and Type Field Description
    int x
    The X coordinate of this Point.
    int y
    The Y coordinate of this Point.

  • Constructor Summary

    Constructors 
    Constructor Description
    Point()
    Constructs and initializes a point at the origin (0, 0) of the coordinate space.
    Point​(int x, int y)
    Constructs and initializes a point at the specified (x,y) location in the coordinate space.
    Point​(Point p)
    Constructs and initializes a point with the same location as the specified Point object.

  • Method Summary

    Modifier and Type Method Description
    boolean equals​(Object obj)
    Determines whether or not two points are equal.
    Point getLocation()
    Returns the location of this point.
    double getX()
    Returns the X coordinate of this Point2D in double precision.
    double getY()
    Returns the Y coordinate of this Point2D in double precision.
    void move​(int x, int y)
    Moves this point to the specified location in the (x,y) coordinate plane.
    void setLocation​(double x, double y)
    Sets the location of this point to the specified double coordinates.
    void setLocation​(int x, int y)
    Changes the point to have the specified location.
    void setLocation​(Point p)
    Sets the location of the point to the specified location.
    String toString()
    Returns a string representation of this point and its location in the (x,y) coordinate space.
    void translate​(int dx, int dy)
    Translates this point, at location (x,y), by dx along the x axis and dy along the y axis so that it now represents the point (x+dx,y+dy).

    Methods declared in class java.awt.geom.Point2D

    clone, distance, distance, distance, distanceSq, distanceSq, distanceSq, hashCode, setLocation

    Methods declared in class java.lang.Object

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

  • Field Details

    • x

      public int x
      The X coordinate of this Point. If no X coordinate is set it will default to 0.
      Since:
      1.0
      See Also:
      getLocation(), move(int, int)

    • y

      public int y
      The Y coordinate of this Point. If no Y coordinate is set it will default to 0.
      Since:
      1.0
      See Also:
      getLocation(), move(int, int)

  • Constructor Details

    • Point

      public Point()
      Constructs and initializes a point at the origin (0, 0) of the coordinate space.
      Since:
      1.1

    • Point

      public Point​(Point p)
      Constructs and initializes a point with the same location as the specified Point object.
      Parameters:
      p - a point
      Since:
      1.1

    • Point

      public Point​(int x, int y)
      Constructs and initializes a point at the specified (x,y) location in the coordinate space.
      Parameters:
      x - the X coordinate of the newly constructed Point
      y - the Y coordinate of the newly constructed Point
      Since:
      1.0

  • Method Details

    • getX

      public double getX()
      Returns the X coordinate of this Point2D in double precision.
      Specified by:
      getX in class Point2D
      Returns:
      the X coordinate of this Point2D.
      Since:
      1.2

    • getY

      public double getY()
      Returns the Y coordinate of this Point2D in double precision.
      Specified by:
      getY in class Point2D
      Returns:
      the Y coordinate of this Point2D.
      Since:
      1.2

    • getLocation

      public Point getLocation()
      Returns the location of this point. This method is included for completeness, to parallel the getLocation method of Component.
      Returns:
      a copy of this point, at the same location
      Since:
      1.1
      See Also:
      Component.getLocation(), setLocation(java.awt.Point), setLocation(int, int)

    • setLocation

      public void setLocation​(Point p)
      Sets the location of the point to the specified location. This method is included for completeness, to parallel the setLocation method of Component.
      Parameters:
      p - a point, the new location for this point
      Since:
      1.1
      See Also:
      Component.setLocation(java.awt.Point), getLocation()

    • setLocation

      public void setLocation​(int x, int y)
      Changes the point to have the specified location.

      This method is included for completeness, to parallel the setLocation method of Component. Its behavior is identical with move(int, int).

      Parameters:
      x - the X coordinate of the new location
      y - the Y coordinate of the new location
      Since:
      1.1
      See Also:
      Component.setLocation(int, int), getLocation(), move(int, int)

    • setLocation

      public void setLocation​(double x, double y)
      Sets the location of this point to the specified double coordinates. The double values will be rounded to integer values. Any number smaller than Integer.MIN_VALUE will be reset to MIN_VALUE, and any number larger than Integer.MAX_VALUE will be reset to MAX_VALUE.
      Specified by:
      setLocation in class Point2D
      Parameters:
      x - the X coordinate of the new location
      y - the Y coordinate of the new location
      See Also:
      getLocation()

    • move

      public void move​(int x, int y)
      Moves this point to the specified location in the (x,y) coordinate plane. This method is identical with setLocation(int, int).
      Parameters:
      x - the X coordinate of the new location
      y - the Y coordinate of the new location
      See Also:
      Component.setLocation(int, int)

    • translate

      public void translate​(int dx, int dy)
      Translates this point, at location (x,y), by dx along the x axis and dy along the y axis so that it now represents the point (x+dx,y+dy).
      Parameters:
      dx - the distance to move this point along the X axis
      dy - the distance to move this point along the Y axis

    • 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 Point2D
      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.
      See Also:
      Object.hashCode(), HashMap

    • toString

      public String toString()
      Returns a string representation of this point and its location in the (x,y) coordinate space. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not be null.
      Overrides:
      toString in class Object
      Returns:
      a string representation of this point