Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Field Details

• x

  public int x

  The X coordinate of thisPoint. 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 thisPoint. 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 specifiedPoint 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 constructedPoint

  y - the Y coordinate of the newly constructedPoint

  Since:

  1.0

Method Details

• getX

  public double getX()

  Returns the X coordinate of thisPoint2D indouble precision.

  Specified by:

  getX in class Point2D

  Returns:

  the X coordinate of thisPoint2D.

  Since:

  1.2

• getY

  public double getY()

  Returns the Y coordinate of thisPoint2D indouble precision.

  Specified by:

  getY in class Point2D

  Returns:

  the Y coordinate of thisPoint2D.

  Since:

  1.2

• getLocation

  public Point getLocation()

  Returns the location of this point. This method is included for completeness, to parallel thegetLocation method ofComponent.

  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 thesetLocation method ofComponent.

  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 thesetLocation method ofComponent. Its behavior is identical withmove(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 thanInteger.MIN_VALUE will be reset toMIN_VALUE, and any number larger thanInteger.MAX_VALUE will be reset toMAX_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 withsetLocation(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), bydx along thex axis anddy along they 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 ofPoint2D are equal if the values of theirx andy 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 thisPoint2D

  Returns:

  true if the object to be compared is an instance ofPoint2D 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 benull.

  Overrides:

  toString in class Object

  Returns:

  a string representation of this point