java.awt
Class Rectangle

java.lang.Object
  |
  +--java.awt.Rectangle

public class Rectangle

extends Object

A rectangle defined by x, y, width and height.

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.

Constructor Summary

Rectangle()
Constructs a new rectangle.

Rectangle(Dimension d)
Constructs a rectangle and initializes it to the specified width and height.

Rectangle(int width, int height)
Constructs a rectangle and initializes it with the specified width and height parameters.

Rectangle(int x, int y, int width, int height)
Constructs and initializes a rectangle with the specified parameters.

Rectangle(Point p)
Constructs a rectangle and initializes it to the specified point.

Rectangle(Point p, Dimension d)
Constructs a rectangle and initializes it to a specified point and dimension.

Method Summary

void	add(int newx, int newy) Adds a point to a rectangle.
void	add(Point pt) Adds a point to a rectangle.
void	add(Rectangle r) Adds a rectangle to a rectangle.
boolean	equals(Object obj) Checks whether two rectangles are equal.
void	grow(int h, int v) Grows the rectangle horizontally and vertically.
int	hashCode() Returns the hashcode for this Rectangle.
boolean	inside(int x, int y) Checks if the specified point lies inside a rectangle.
Rectangle	intersection(Rectangle r) Computes the intersection of two rectangles.
boolean	intersects(Rectangle r) Checks if two rectangles intersect.
boolean	isEmpty() Determines whether the rectangle is empty.
void	move(int x, int y) Moves the rectangle.
void	reshape(int x, int y, int width, int height) Reshapes the rectangle.
void	resize(int width, int height) Resizes the rectangle.
String	toString() Returns the String representation of this Rectangle's values.
void	translate(int x, int y) Translates the rectangle.
Rectangle	union(Rectangle r) Computes the union of two rectangles.

Methods inherited from class java.lang.Object

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

Field Detail

x

public int x

The x coordinate of the rectangle.

y

public int y

The y coordinate of the rectangle.

width

public int width

The width of the rectangle.

height

public int height

The height of the rectangle.

Constructor Detail

Rectangle

public Rectangle()

Constructs a new rectangle.

Rectangle

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

Constructs and initializes a rectangle with the specified parameters.

Parameters:

x - the x coordinate

y - the y coordinate

width - the width of the rectangle

height - the height of the rectangle

Rectangle

public Rectangle(int width,
                 int height)

Constructs a rectangle and initializes it with the specified width and height parameters.

Parameters:

width - the width of the rectangle

height - the height of the rectangle

Rectangle

public Rectangle(Point p,
                 Dimension d)

Constructs a rectangle and initializes it to a specified point and dimension.

Parameters:

p - the point

d - dimension

Rectangle

public Rectangle(Point p)

Constructs a rectangle and initializes it to the specified point.

Parameters:

p - the value of the x and y coordinate

Rectangle

public Rectangle(Dimension d)

Constructs a rectangle and initializes it to the specified width and height.

Parameters:

d - the value of the width and height

Method Detail

reshape

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

Reshapes the rectangle.

move

public void move(int x,
                 int y)

Moves the rectangle.

translate

public void translate(int x,
                      int y)

Translates the rectangle.

resize

public void resize(int width,
                   int height)

Resizes the rectangle.

inside

public boolean inside(int x,
                      int y)

Checks if the specified point lies inside a rectangle.

Parameters:

x - the x coordinate

y - the y coordinate

intersects

public boolean intersects(Rectangle r)

Checks if two rectangles intersect.

intersection

public Rectangle intersection(Rectangle r)

Computes the intersection of two rectangles.

union

public Rectangle union(Rectangle r)

Computes the union of two rectangles.

add

public void add(int newx,
                int newy)

Adds a point to a rectangle. This results in the smallest rectangle that contains both the rectangle and the point.

add

public void add(Point pt)

Adds a point to a rectangle. This results in the smallest rectangle that contains both the rectangle and the point.

add

public void add(Rectangle r)

Adds a rectangle to a rectangle. This results in the union of the two rectangles.

grow

public void grow(int h,
                 int v)

Grows the rectangle horizontally and vertically.

isEmpty

public boolean isEmpty()

Determines whether the rectangle is empty.

hashCode

public int hashCode()

Returns the hashcode for this Rectangle.

Overrides:

hashCode in class Object

See Also:

Hashtable

equals

public boolean equals(Object obj)

Checks whether two rectangles are equal.

Overrides:

equals in class Object

Parameters:

obj - the Object to compare with

Returns:

true if these Objects are equal; false otherwise.

See Also:

Hashtable

toString

public String toString()

Returns the String representation of this Rectangle's values.

Overrides:

toString in class Object