core
Class Position

java.lang.Object
  core.Position

public class Position
extends Object

Position on the board.

Specification Fields

• x : int // x location of piece
• y : int // y location of piece Abstract Invariant: 0 <= x <= 7 0 <= y <= 7

Field Summary

static Collection<Position>	ALL
static Position[][]	pos

Method Summary

static Position[][]	ALLarray()
static Collection<Position>	ALLfn()
boolean	equals(Object o)
static Position	fromString(String s)
static Position	get(int x, int y)
int	getX()
int	getY()
int	hashCode()
boolean	isValid()
static boolean	isValid(int x, int y)
String	toString()
static boolean	validPosition(String s)

Methods inherited from class java.lang.Object

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

Field Detail

pos

public static final Position[][] pos

ALL

public static final Collection<Position> ALL

Method Detail

ALLarray

public static Position[][] ALLarray()

ALLfn

public static Collection<Position> ALLfn()

isValid

public static boolean isValid(int x,
                              int y)

isValid

public boolean isValid()

get

public static Position get(int x,
                           int y)

getX

public int getX()

Returns:

x of this position

getY

public int getY()

Returns:

y of this position

equals

public boolean equals(Object o)

Overrides:

equals in class Object

See Also:

Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

See Also:

Object

fromString

public static Position fromString(String s)

Parameters:

s - is a String representing a chess position

Requires:

s is of the form [row][column], where the row is a character from a to h and the column is a number from 1 to 8. For example, c7 is a legal argument to this method, as is h4.

Returns:

a Position corresponding to the String s. Its toString method will return a String equal to s.

validPosition

public static boolean validPosition(String s)

Returns:

true if s is of the form [row][column], where the row is a character from a to h and the column is a number from 1 to 8. For example, c7 is a valid position String, as is h4.

toString

public String toString()

Overrides:

toString in class Object

Returns:

a String representation of this, of the form [column][row]. The columns are represented by letters from a to h, where a corresponds to a column argument of 1 to the constructor. The rows are numbered from 1 to 8. Thus, from White's perspective, the lower-left corner is a1, the lower-right corner is h1, and the upper-right corner is h8.