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Java Platform 1.2
Beta 4

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SUMMARY: INNER | FIELD | CONSTR | METHOD

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Class java.awt.Point

java.lang.Object
  |
  +--java.awt.geom.Point2D
        |
        +--java.awt.Point

public class Point

extends Point2D

implements Serializable

A point representing a location in (x, y) coordinate space, specified in integer precision.

Since:

JDK1.0

See Also:

Serialized Form

Inner classes inherited from class java.awt.geom.Point2D

Point2D.Double , Point2D.Float

Field Summary

int	x The x coordinate.
int	y The y coordinate.

Constructor Summary

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

boolean	equals(Object obj) Determines whether two points are equal.
Point	getLocation() Returns the location of this point.
double	getX() Returns the X coordinate of the point in double precision.
double	getY() Returns the Y coordinate of the point in double precision.
int	hashCode() Returns the hashcode for this point.
void	move(int x, int y) Moves this point to the specificed location in the (x, y) coordinate plane.
void	setLocation(double x, double y) Sets the location of this point to the specified float coordinates.
void	setLocation(int x, int y) Changes the point to have the specificed location.
void	setLocation(Point p) Sets the location of the point to the specificed location.
String	toString() Returns a representation of this point and its location in the (x, y) coordinate space as a string.
void	translate(int x, int y) 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 inherited from class java.awt.geom.Point2D

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

Methods inherited from class java.lang.Object

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

Field Detail

x

public int x

The x coordinate.

y

public int y

The y coordinate.

Constructor Detail

Point

public Point()

Constructs and initializes a point at the origin (0, 0) of the coordinate space.

Parameters:

x - the x coordinate.

y - the y coordinate.

Since:

JDK1.1

Point

public Point(Point p)

Constructs and initializes a point with the same location as the specified Point object.

Parameters:

p - a point.

Since:

JDK1.1

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.

y - the y coordinate.

Method Detail

getX

public double getX()

Returns the X coordinate of the point in double precision.

Overrides:

getX in class Point2D

getY

public double getY()

Returns the Y coordinate of the point in double precision.

Overrides:

getY in class Point2D

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:

JDK1.1

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 specificed 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:

JDK1.1

See Also:

Component.setLocation(java.awt.Point), getLocation()

setLocation

public void setLocation(int x,
                        int y)

Changes the point to have the specificed 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:

JDK1.1

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 float coordinates.

Overrides:

setLocation in class Point2D

move

public void move(int x,
                 int y)

Moves this point to the specificed 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 x,
                      int y)

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.

hashCode

public int hashCode()

Returns the hashcode for this point.

Returns:

a hash code for this point.

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Determines whether two points are equal. Two instances of Point are equal if the values of their x and y member fields, representing their position in the coordinate space, are the same.

Parameters:

obj - an object to be compared with this point.

Returns:

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

Overrides:

equals in class Point2D

toString

public String toString()

Returns a representation of this point and its location in the (x, y) coordinate space as a string.

Returns:

a string representation of this point, including the values of its member fields.

Overrides:

toString in class Object