piece

src/backend/Board.java

@@ -6,6 +6,7 @@ public class Board {
 	
     private int width;
     private int height;
+    private ArrayList<Piece> pieces = new ArrayList<>();
 
 	public Board(int colNum, int lineNum) {
         this.width = colNum;

src/backend/Piece.java

@@ -1,21 +1,32 @@
 package backend;
 
 public class Piece {
+    private int x;
+    private int y;
+    private PieceType type;
+    private boolean isWhite;
+    
+    public Piece(PieceType type, boolean isWhite, int x, int y) {
+        this.type = type;
+        this.isWhite = isWhite;
+        this.x = x;
+        this.y = y;
+    }
 
 	public int getX() {
-		return 0;
+		return x;
 	}
 
 	public int getY() {
-		return 0;
+		return y;
 	}
 	
 	public PieceType getType() {
-		return null;
+		return type;
 	}
 	
 	public boolean isWhite() {
-		return false;
+		return isWhite;
 	}
 	
 }