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java.awt
Class Rectangle

java.lang.Object
  java.awt.geom.RectangularShape
      java.awt.geom.Rectangle2D
          java.awt.Rectangle

All Implemented Interfaces:: Shape, Serializable, Cloneable

Direct Known Subclasses:: DefaultCaret

public class Rectangle
extends Rectangle2D
implements Shape, Serializable
extends Rectangle2D
implements Shape, Serializable

A Rectangle specifies an area in a coordinate space that is enclosed by the Rectangle object's top-left point (x, y) in the coordinate space, its width, and its height.

A Rectangle object's width and height are public fields. The constructors that create a Rectangle, and the methods that can modify one, do not prevent setting a negative value for width or height.

A Rectangle whose width or height is negative is considered empty. If the Rectangle is empty, then the isEmpty method returns true. No point can be contained by or inside an empty Rectangle. The values of width and height, however, are still valid. An empty Rectangle still has a location in the coordinate space, and methods that change its size or location remain valid. The behavior of methods that operate on more than one Rectangle is undefined if any of the participating Rectangle objects has a negative width or height. These methods include intersects, intersection, and union.

Since:: JDK1.0
See Also:: Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.awt.geom.Rectangle2D
`Rectangle2D.Double, Rectangle2D.Float`

Field Summary
`int`	`height` The height of the `Rectangle`.
`int`	`width` The width of the `Rectangle`.
`int`	`x` The x coordinate of the `Rectangle`.
`int`	`y` The y coordinate of the `Rectangle`.

Fields inherited from class java.awt.geom.Rectangle2D
`OUT_BOTTOM, OUT_LEFT, OUT_RIGHT, OUT_TOP`

Constructor Summary
`Rectangle()` Constructs a new `Rectangle` whose top-left corner is at (0, 0) in the coordinate space, and whose width and height are both zero.
`Rectangle(Dimension d)` Constructs a new `Rectangle` whose top left corner is (0, 0) and whose width and height are specified by the `Dimension` argument.
`Rectangle(int width, int height)` Constructs a new `Rectangle` whose top-left corner is at (0, 0) in the coordinate space, and whose width and height are specified by the arguments of the same name.
`Rectangle(int x, int y, int width, int height)` Constructs a new `Rectangle` whose top-left corner is specified as (`x`, `y`) and whose width and height are specified by the arguments of the same name.
`Rectangle(Point p)` Constructs a new `Rectangle` whose top-left corner is the specified `Point`, and whose width and height are both zero.
`Rectangle(Point p, Dimension d)` Constructs a new `Rectangle` whose top-left corner is specified by the `Point` argument, and whose width and height are specified by the `Dimension` argument.
`Rectangle(Rectangle r)` Constructs a new `Rectangle`, initialized to match the values of the specified `Rectangle`.

Method Summary
`void`	`add(int newx, int newy)` Adds a point, specified by the integer arguments `newx` and `newy`, to this `Rectangle`.
`void`	`add(Point pt)` Adds the specified `Point` to this `Rectangle`.
`void`	`add(Rectangle r)` Adds a `Rectangle` to this `Rectangle`.
`boolean`	`contains(int x, int y)` Checks whether or not this `Rectangle` contains the point at the specified location (x, y).
`boolean`	`contains(int X, int Y, int W, int H)` Checks whether this `Rectangle` entirely contains the `Rectangle` at the specified location (X, Y) with the specified dimensions (W, H).
`boolean`	`contains(Point p)` Checks whether or not this `Rectangle` contains the specified `Point`.
`boolean`	`contains(Rectangle r)` Checks whether or not this `Rectangle` entirely contains the specified `Rectangle`.
`Rectangle2D`	`createIntersection(Rectangle2D r)` Returns a new `Rectangle2D` object representing the intersection of this `Rectangle` with the specified `Rectangle2D`.
`Rectangle2D`	`createUnion(Rectangle2D r)` Returns a new `Rectangle2D` object representing the union of this `Rectangle` with the specified `Rectangle2D`.
`boolean`	`equals(Object obj)` Checks whether two rectangles are equal.
`Rectangle`	`getBounds()` Gets the bounding `Rectangle` of this `Rectangle`.
`Rectangle2D`	`getBounds2D()` Return the high precision bounding box of this rectangle.
`double`	`getHeight()` Returns the height of the bounding `Rectangle` in `double` precision.
`Point`	`getLocation()` Returns the location of this `Rectangle`.
`Dimension`	`getSize()` Gets the size of this `Rectangle`, represented by the returned `Dimension`.
`double`	`getWidth()` Returns the width of the bounding `Rectangle` in `double` precision.
`double`	`getX()` Returns the X coordinate of the bounding `Rectangle` in `double` precision.
`double`	`getY()` Returns the Y coordinate of the bounding `Rectangle` in `double` precision.
`void`	`grow(int h, int v)` Resizes the `Rectangle` both horizontally and vertically.
`boolean`	`inside(int X, int Y)` Deprecated. As of JDK version 1.1, replaced by `contains(int, int)`.
`Rectangle`	`intersection(Rectangle r)` Computes the intersection of this `Rectangle` with the specified `Rectangle`.
`boolean`	`intersects(Rectangle r)` Determines whether or not this `Rectangle` and the specified `Rectangle` intersect.
`boolean`	`isEmpty()` Determines whether or not this `Rectangle` is empty.
`void`	`move(int x, int y)` Deprecated. As of JDK version 1.1, replaced by `setLocation(int, int)`.
`int`	`outcode(double x, double y)` Determines where the specified coordinates lie with respect to this `Rectangle`.
`void`	`reshape(int x, int y, int width, int height)` Deprecated. As of JDK version 1.1, replaced by `setBounds(int, int, int, int)`.
`void`	`resize(int width, int height)` Deprecated. As of JDK version 1.1, replaced by `setSize(int, int)`.
`void`	`setBounds(int x, int y, int width, int height)` Sets the bounding `Rectangle` of this `Rectangle` to the specified `x`, `y`, `width`, and `height`.
`void`	`setBounds(Rectangle r)` Sets the bounding `Rectangle` of this `Rectangle` to match the specified `Rectangle`.
`void`	`setLocation(int x, int y)` Moves this `Rectangle` to the specified location.
`void`	`setLocation(Point p)` Moves this `Rectangle` to the specified location.
`void`	`setRect(double x, double y, double width, double height)` Sets the bounds of this `Rectangle` to the specified `x`, `y`, `width`, and `height`.
`void`	`setSize(Dimension d)` Sets the size of this `Rectangle` to match the specified `Dimension`.
`void`	`setSize(int width, int height)` Sets the size of this `Rectangle` to the specified width and height.
`String`	`toString()` Returns a `String` representing this `Rectangle` and its values.
`void`	`translate(int x, int y)` Translates this `Rectangle` the indicated distance, to the right along the x coordinate axis, and downward along the y coordinate axis.
`Rectangle`	`union(Rectangle r)` Computes the union of this `Rectangle` with the specified `Rectangle`.

Methods inherited from class java.awt.geom.Rectangle2D
`add, add, add, contains, contains, getPathIterator, getPathIterator, hashCode, intersect, intersects, intersectsLine, intersectsLine, outcode, setFrame, setRect, union`

Methods inherited from class java.awt.geom.RectangularShape
`clone, contains, contains, getCenterX, getCenterY, getFrame, getMaxX, getMaxY, getMinX, getMinY, intersects, setFrame, setFrame, setFrameFromCenter, setFrameFromCenter, setFrameFromDiagonal, setFrameFromDiagonal`

Methods inherited from class java.lang.Object
`finalize, getClass, notify, notifyAll, wait, wait, wait`

Methods inherited from interface java.awt.Shape
`contains, contains, contains, contains, getPathIterator, getPathIterator, intersects, intersects`

Field Detail

x

public int x

The x coordinate of the Rectangle.

See Also:: setLocation(int, int), getLocation()

y

public int y

The y coordinate of the Rectangle.

See Also:: setLocation(int, int), getLocation()

width

public int width

The width of the Rectangle.

Since:: JDK1.0.
See Also:: setSize(int, int), getSize()

height

public int height

The height of the Rectangle.

See Also:: setSize(int, int), getSize()

Constructor Detail

Rectangle

public Rectangle()

Constructs a new Rectangle whose top-left corner is at (0, 0) in the coordinate space, and whose width and height are both zero.

Rectangle

public Rectangle(Rectangle r)

Constructs a new Rectangle, initialized to match the values of the specified Rectangle.

Parameters:: r - the Rectangle from which to copy initial values to a newly constructed Rectangle
Since:: JDK1.1

Rectangle

public Rectangle(int x,
                 int y,
                 int width,
                 int height)

Constructs a new Rectangle whose top-left corner is specified as (x, y) and whose width and height are specified by the arguments of the same name.

Parameters:: x - the specified x coordinate; y - the specified y coordinate; width - the width of the Rectangle; height - the height of the Rectangle

Rectangle

public Rectangle(int width,
                 int height)

Constructs a new Rectangle whose top-left corner is at (0, 0) in the coordinate space, and whose width and height are specified by the arguments of the same name.

Parameters:: width - the width of the Rectangle; height - the height of the Rectangle

Rectangle

public Rectangle(Point p,
                 Dimension d)

Constructs a new Rectangle whose top-left corner is specified by the Point argument, and whose width and height are specified by the Dimension argument.

Parameters:: p - a Point that is the top-left corner of the Rectangle; d - a Dimension, representing the width and height of the Rectangle

Rectangle

public Rectangle(Point p)

Constructs a new Rectangle whose top-left corner is the specified Point, and whose width and height are both zero.

Parameters:: p - a Point that is the top left corner of the Rectangle

Rectangle

public Rectangle(Dimension d)

Constructs a new Rectangle whose top left corner is (0, 0) and whose width and height are specified by the Dimension argument.

Parameters:: d - a Dimension, specifying width and height

Method Detail

getX

public double getX()

Returns the X coordinate of the bounding Rectangle in double precision.

Specified by:: getX in class RectangularShape

Returns:: the x coordinate of the bounding Rectangle.

getY

public double getY()

Returns the Y coordinate of the bounding Rectangle in double precision.

Specified by:: getY in class RectangularShape

Returns:: the y coordinate of the bounding Rectangle.

getWidth

public double getWidth()

Returns the width of the bounding Rectangle in double precision.

Specified by:: getWidth in class RectangularShape

Returns:: the width of the bounding Rectangle.

getHeight

public double getHeight()

Returns the height of the bounding Rectangle in double precision.

Specified by:: getHeight in class RectangularShape

Returns:: the height of the bounding Rectangle.

getBounds

public Rectangle getBounds()

Gets the bounding Rectangle of this Rectangle.

This method is included for completeness, to parallel the getBounds method of Component.

Specified by:: getBounds in interface Shape
Overrides:: getBounds in class RectangularShape

Returns:: a new Rectangle, equal to the bounding Rectangle for this Rectangle.
Since:: JDK1.1
See Also:: Component.getBounds(), setBounds(Rectangle), setBounds(int, int, int, int)

getBounds2D

public Rectangle2D getBounds2D()

Return the high precision bounding box of this rectangle.

Specified by:: getBounds2D in interface Shape
Overrides:: getBounds2D in class Rectangle2D

Returns:: the bounding box of this Rectangle2D.
Since:: 1.2
See Also:: Shape.getBounds()

setBounds

public void setBounds(Rectangle r)

Sets the bounding Rectangle of this Rectangle to match the specified Rectangle.

This method is included for completeness, to parallel the setBounds method of Component.

Parameters:: r - the specified Rectangle
Since:: JDK1.1
See Also:: getBounds(), Component.setBounds(java.awt.Rectangle)

setBounds

public void setBounds(int x,
                      int y,
                      int width,
                      int height)

Sets the bounding Rectangle of this Rectangle to the specified x, y, width, and height.

This method is included for completeness, to parallel the setBounds method of Component.

Parameters:: x - the new x coordinate for the top-left corner of this Rectangle; y - the new y coordinate for the top-left corner of this Rectangle; width - the new width for this Rectangle; height - the new height for this Rectangle
Since:: JDK1.1
See Also:: getBounds(), Component.setBounds(int, int, int, int)

setRect

public void setRect(double x,
                    double y,
                    double width,
                    double height)

Sets the bounds of this Rectangle to the specified x, y, width, and height. This method is included for completeness, to parallel the setBounds method of Component.

Specified by:: setRect in class Rectangle2D

Parameters:: x - the x coordinate of the upper-left corner of the specified rectangle; y - the y coordinate of the upper-left corner of the specified rectangle; width - the new width for the Dimension object; height - the new height for the Dimension object

reshape

@Deprecated
public void reshape(int x,
                               int y,
                               int width,
                               int height)

Deprecated. As of JDK version 1.1, replaced by setBounds(int, int, int, int).

Sets the bounding Rectangle of this Rectangle to the specified x, y, width, and height.

Parameters:: x - the new x coordinate for the top-left corner of this Rectangle; y - the new y coordinate for the top-left corner of this Rectangle; width - the new width for this Rectangle; height - the new height for this Rectangle

getLocation

public Point getLocation()

Returns the location of this Rectangle.

This method is included for completeness, to parallel the getLocation method of Component.

Returns:: the Point that is the top-left corner of this Rectangle.
Since:: JDK1.1
See Also:: Component.getLocation(), setLocation(Point), setLocation(int, int)

setLocation

public void setLocation(Point p)

Moves this Rectangle to the specified location.

This method is included for completeness, to parallel the setLocation method of Component.

Parameters:: p - the Point specifying the new location for this Rectangle
Since:: JDK1.1
See Also:: Component.setLocation(java.awt.Point), getLocation()

setLocation

public void setLocation(int x,
                        int y)

Moves this Rectangle to the specified location.

This method is included for completeness, to parallel the setLocation method of Component.

Parameters:: x - the x coordinate of the new location; y - the y coordinate of the new location
Since:: JDK1.1
See Also:: getLocation(), Component.setLocation(int, int)

move

@Deprecated
public void move(int x,
                            int y)

Deprecated. As of JDK version 1.1, replaced by setLocation(int, int).

Moves this Rectangle to the specified location.

Parameters:: x - the x coordinate of the new location; y - the y coordinate of the new location

translate

public void translate(int x,
                      int y)

Translates this Rectangle the indicated distance, to the right along the x coordinate axis, and downward along the y coordinate axis.

Parameters:: x - the distance to move this Rectangle along the x axis; y - the distance to move this Rectangle along the y axis
See Also:: setLocation(int, int), setLocation(java.awt.Point)

getSize

public Dimension getSize()

Gets the size of this Rectangle, represented by the returned Dimension.

This method is included for completeness, to parallel the getSize method of Component.

Returns:: a Dimension, representing the size of this Rectangle.
Since:: JDK1.1
See Also:: Component.getSize(), setSize(Dimension), setSize(int, int)

setSize

public void setSize(Dimension d)

Sets the size of this Rectangle to match the specified Dimension.

This method is included for completeness, to parallel the setSize method of Component.

Parameters:: d - the new size for the Dimension object
Since:: JDK1.1
See Also:: Component.setSize(java.awt.Dimension), getSize()

setSize

public void setSize(int width,
                    int height)

Sets the size of this Rectangle to the specified width and height.

This method is included for completeness, to parallel the setSize method of Component.

Parameters:: width - the new width for this Rectangle; height - the new height for this Rectangle
Since:: JDK1.1
See Also:: Component.setSize(int, int), getSize()

resize

@Deprecated
public void resize(int width,
                              int height)

Deprecated. As of JDK version 1.1, replaced by setSize(int, int).

Sets the size of this Rectangle to the specified width and height.

Parameters:: width - the new width for this Rectangle; height - the new height for this Rectangle

contains

public boolean contains(Point p)

Checks whether or not this Rectangle contains the specified Point.

Parameters:: p - the Point to test
Returns:: true if the Point (x, y) is inside this Rectangle; false otherwise.
Since:: JDK1.1

contains

public boolean contains(int x,
                        int y)

Checks whether or not this Rectangle contains the point at the specified location (x, y).

Parameters:: x - the specified x coordinate; y - the specified y coordinate
Returns:: true if the point (x, y) is inside this Rectangle; false otherwise.
Since:: JDK1.1

contains

public boolean contains(Rectangle r)

Checks whether or not this Rectangle entirely contains the specified Rectangle.

Parameters:: r - the specified Rectangle
Returns:: true if the Rectangle is contained entirely inside this Rectangle; false otherwise
Since:: JDK1.2

contains

public boolean contains(int X,
                        int Y,
                        int W,
                        int H)

Checks whether this Rectangle entirely contains the Rectangle at the specified location (X, Y) with the specified dimensions (W, H).

Parameters:: X - the specified x coordinate; Y - the specified y coordinate; W - the width of the Rectangle; H - the height of the Rectangle
Returns:: true if the Rectangle specified by (X, Y, W, H) is entirely enclosed inside this Rectangle; false otherwise.
Since:: JDK1.1

inside

@Deprecated
public boolean inside(int X,
                                 int Y)

Deprecated. As of JDK version 1.1, replaced by contains(int, int).

Checks whether or not this Rectangle contains the point at the specified location (X, Y).

Parameters:: X - the specified x coordinate; Y - the specified y coordinate
Returns:: true if the point (X, Y) is inside this Rectangle; false otherwise.

intersects

public boolean intersects(Rectangle r)

Determines whether or not this Rectangle and the specified Rectangle intersect. Two rectangles intersect if their intersection is nonempty.

Parameters:: r - the specified Rectangle
Returns:: true if the specified Rectangle and this Rectangle intersect; false otherwise.

intersection

public Rectangle intersection(Rectangle r)

Computes the intersection of this Rectangle with the specified Rectangle. Returns a new Rectangle that represents the intersection of the two rectangles. If the two rectangles do not intersect, the result will be an empty rectangle.

Parameters:: r - the specified Rectangle
Returns:: the largest Rectangle contained in both the specified Rectangle and in this Rectangle; or if the rectangles do not intersect, an empty rectangle.

union

public Rectangle union(Rectangle r)

Computes the union of this Rectangle with the specified Rectangle. Returns a new Rectangle that represents the union of the two rectangles

Parameters:: r - the specified Rectangle
Returns:: the smallest Rectangle containing both the specified Rectangle and this Rectangle.

add

public void add(int newx,
                int newy)

Adds a point, specified by the integer arguments newx and newy, to this Rectangle. The resulting Rectangle is the smallest Rectangle that contains both the original Rectangle and the specified point.

After adding a point, a call to contains with the added point as an argument does not necessarily return true. The contains method does not return true for points on the right or bottom edges of a Rectangle. Therefore, if the added point falls on the right or bottom edge of the enlarged Rectangle, contains returns false for that point.

Parameters:: newx - the x coordinate of the new point; newy - the y coordinate of the new point

add

public void add(Point pt)

Adds the specified Point to this Rectangle. The resulting Rectangle is the smallest Rectangle that contains both the original Rectangle and the specified Point.

After adding a Point, a call to contains with the added Point as an argument does not necessarily return true. The contains method does not return true for points on the right or bottom edges of a Rectangle. Therefore if the added Point falls on the right or bottom edge of the enlarged Rectangle, contains returns false for that Point.

Parameters:: pt - the new Point to add to this Rectangle

add

public void add(Rectangle r)

Adds a Rectangle to this Rectangle. The resulting Rectangle is the union of the two rectangles.

Parameters:: r - the specified Rectangle

grow

public void grow(int h,
                 int v)

Resizes the Rectangle both horizontally and vertically.

This method modifies the Rectangle so that it is h units larger on both the left and right side, and v units larger at both the top and bottom.

The new Rectangle has (x - h, y - v) as its top-left corner, a width of width + 2h, and a height of height + 2v.

If negative values are supplied for h and v, the size of the Rectangle decreases accordingly. The grow method does not check whether the resulting values of width and height are non-negative.

Parameters:: h - the horizontal expansion; v - the vertical expansion

isEmpty

public boolean isEmpty()

Determines whether or not this Rectangle is empty. A Rectangle is empty if its width or its height is less than or equal to zero.

Specified by:: isEmpty in class RectangularShape

Returns:: true if this Rectangle is empty; false otherwise.

outcode

public int outcode(double x,
                   double y)

Determines where the specified coordinates lie with respect to this Rectangle. This method computes a binary OR of the appropriate mask values indicating, for each side of this Rectangle, whether or not the specified coordinates are on the same side of the edge as the rest of this Rectangle.

Specified by:: outcode in class Rectangle2D

Parameters:: x - the specified x coordinate; y - the specified y coordinate
Returns:: the logical OR of all appropriate out codes.
Since:: 1.2
See Also:: Rectangle2D.OUT_LEFT, Rectangle2D.OUT_TOP, Rectangle2D.OUT_RIGHT, Rectangle2D.OUT_BOTTOM

createIntersection

public Rectangle2D createIntersection(Rectangle2D r)

Returns a new Rectangle2D object representing the intersection of this Rectangle with the specified Rectangle2D.

Specified by:: createIntersection in class Rectangle2D

Parameters:: r - the Rectangle2D to be intersected with this Rectangle
Returns:: the largest Rectangle2D contained in both the specified Rectangle2D and in this Rectangle.
Since:: 1.2

createUnion

public Rectangle2D createUnion(Rectangle2D r)

Returns a new Rectangle2D object representing the union of this Rectangle with the specified Rectangle2D.

Specified by:: createUnion in class Rectangle2D

Parameters:: r - the Rectangle2D to be combined with this Rectangle
Returns:: the smallest Rectangle2D containing both the specified Rectangle2D and this Rectangle.
Since:: 1.2

equals

public boolean equals(Object obj)

Checks whether two rectangles are equal.

The result is true if and only if the argument is not null and is a Rectangle object that has the same top-left corner, width, and height as this Rectangle.

Overrides:: equals in class Rectangle2D

Parameters:: obj - the Object to compare with this Rectangle
Returns:: true if the objects are equal; false otherwise.
See Also:: Object.hashCode(), Hashtable

toString

public String toString()

Returns a String representing this Rectangle and its values.

Overrides:: toString in class Object

Returns:: a String representing this Rectangle object's coordinate and size values.

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Original Source | Taken Source

java.awt Class Rectangle

x

y

width

height

Rectangle

Rectangle

Rectangle

Rectangle

Rectangle

Rectangle

Rectangle

getX

getY

getWidth

getHeight

getBounds

getBounds2D

setBounds

setBounds

setRect

reshape

getLocation

setLocation

setLocation

move

translate

getSize

setSize

setSize

resize

contains

contains

contains

contains

inside

intersects

intersection

union

add

add

add

grow

isEmpty

outcode

createIntersection

createUnion

equals

toString

java.awt
Class Rectangle