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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)
(x, y)
coordinate space, specified in integer precision.
-
Since:
-
1.0
JDK1.0
-
See Also:
-
Serialized Form
Field Summary
|
int |
x
The
X coordinate of this Point.
x
coordinate.
|
int |
y
The
Y coordinate of this Point.
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)
(
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 or not two points are equal. |
Point
|
getLocation
()
Returns the location of this point. |
double |
getX
()
Returns the X coordinate of
this Point2D
the point
in double precision. |
double |
getY
()
Returns the Y coordinate of
this Point2D
the point
in double precision. |
void |
move
(int x, int y)
Moves this point to the specified location in the
(x,y)
(
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)
(
x
,
y
)
coordinate space. |
void |
translate
(int dx, int dy)
Translates this point, at location
(x,y),
(
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).
(x + dx, y + dy).
|
x
public int x
-
The
X coordinate of this Point.
x
coordinate.
If no
X
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.
y
coordinate.
If no
Y
y
coordinate is set it will default to 0.
-
Since:
-
1.0
-
See Also:
-
getLocation()
,
move(int, int)
Point
public Point()
-
Constructs and initializes a point at the origin (0, 0) of the coordinate space.
-
Since:
-
1.1
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:
-
1.1
JDK1.1
Point
public Point(int x,
int y)
-
Constructs and initializes a point at the specified
(x,y)
(
x
,
y
)
location in the coordinate space.
-
Parameters:
-
x - the X coordinate of the newly constructed Point
x - the
x
coordinate
-
y - the Y coordinate of the newly constructed Point
-
Since:
-
1.0
y - the
y
coordinate
getX
public double getX()
-
Returns the X coordinate of
this Point2D
the point
in double precision.
-
-
Specified by:
-
getX
in class
Point2D
-
-
Returns:
-
the X coordinate of this Point2D.
-
Since:
-
1.2
the X coordinate of the point in double precision
getY
public double getY()
-
Returns the Y coordinate of
this Point2D
the point
in double precision.
-
-
Specified by:
-
getY
in class
Point2D
-
-
Returns:
-
the Y coordinate of this Point2D.
-
Since:
-
1.2
the Y coordinate of the point in double precision
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
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 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
JDK1.1
-
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
x
coordinate of the new location -
y - the
Y
y
coordinate of the new location -
Since:
-
1.1
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 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
x
coordinate of the new location -
y - the
Y
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)
(
x
,
y
)
coordinate plane. This method is identical with setLocation(int, int).
-
-
-
Parameters:
-
x - the
X
x
coordinate of the new location -
y - the
Y
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),
(
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).
(x + dx, y + dy).
-
-
-
Parameters:
-
dx - the distance to move this point along the
X
x
axis -
dy - the distance to move this point along the
Y
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()
,
Hashtable
toString
public String toString()
-
Returns a string representation of this point and its location in the
(x,y)
(
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