NEW CLASS: Square

Class Square and Move work.

I'm still working on BitBoard.

src/suicideChess/Square.java

@@ -0,0 +1,51 @@
+package suicideChess;
+
+/**
+ * @author djib
+ * 
+ * This class avoids the use of strings for squares
+ * 
+ * $LastChangedDate$
+ * $LastChangedRevision$
+ * $LastChangedBy$
+ */
+
+
+public class Square {
+	private char file;
+	private int fileNb;
+	private int rank;
+
+	public class NotAValidSquare extends Exception {
+		/**
+		 * Generated by Eclipse
+		 */
+		private static final long serialVersionUID = 7586171991212094565L;
+
+		NotAValidSquare(String s) { super(s); };
+	}
+	
+	public Square(String square) throws NotAValidSquare {
+		if (square.length()!=2 || !(Character.isLetter(square.toCharArray()[0])) || 
+				!(Character.isDigit(square.toCharArray()[1]))) {
+			throw new NotAValidSquare(square);	
+		}
+		file = Character.toLowerCase(square.toCharArray()[0]);
+		fileNb = ((int)file) - ((int)'a') + 1;
+		rank = Integer.parseInt(square.substring(1,2));
+	}
+	
+	public char getFile() {
+		return file;
+	}
+	public int getRank() {
+		return rank;
+	}
+	public int getFileNb() {
+		return fileNb;
+	}
+	
+	public String toString() {
+		return String.valueOf(file)+String.valueOf(rank);
+	}
+}