save and load part

src/backend/Board.java

@@ -116,6 +116,8 @@ public class Board {
 		
 		return pieces;
 	}
+	
+	
 
 	public void userTouch(int x, int y) {
 	    if (x < 0 || x >= width || y < 0 || y >= height) return;
@@ -164,14 +166,58 @@ public class Board {
 	/* saving-loading feature :*/
 
 	public String[] toFileRep() {
-		//TODO
+		String[] lines = new String[height + 1]; // one line per row + 1 for turn
-		return null;
+
+	    for (int y = 0; y < height; y++) {
+	        StringBuilder sb = new StringBuilder();
+	        for (int x = 0; x < width; x++) {
+	            Piece piece = board[x][y];
+	            if (piece == null) {
+	                sb.append("--");
+	            } else {
+	                sb.append(piece.isWhite() ? "W" : "B");
+	                sb.append(piece.getType().getSummary());
+	            }
+	            if (x < width - 1) sb.append(",");
+	        }
+	        lines[y] = sb.toString();
+	    }
+
+	    // Last line stores the turn number
+	    lines[height] = Integer.toString(turn);
+
+	    return lines;
 	}
 
-	public Board(String[] array) {
+	//public Board(String[] array) {
 		//TODO
 
+	//}
+	
+	public Board(String[] fileRepresentation) {
+	    this.height = fileRepresentation.length - 1;
+	    this.width = fileRepresentation[0].split(",").length;
+	    this.board = new Piece[width][height];
+	    this.highlightedSquares = new boolean[width][height];
+
+	    for (int y = 0; y < height; y++) {
+	        String[] tokens = fileRepresentation[y].split(",");
+	        for (int x = 0; x < width; x++) {
+	            String token = tokens[x];
+	            if (!token.equals("--")) {
+	                boolean isWhite = token.charAt(0) == 'W';
+	                char pieceChar = token.charAt(1);
+	                PieceType type = PieceType.fromSummary(pieceChar);
+	                board[x][y] = new Piece(isWhite, type, x, y);
+	            } else {
+	                board[x][y] = null;
+	            }
+	        }
+	    }
+
+	    this.turn = Integer.parseInt(fileRepresentation[height]);
 	}
+
 	
 	private void calculateValidMoves(Piece piece) {
 	    clearHighlights();