made Pawn class

src/pieces/Pawn.java

+package pieces;
+
+import game.Square;
+
+import java.util.ArrayList;
+
+public class Pawn extends Piece {
+
+    public Pawn(String ID,String imagePath,String color){
+        setPieceId(ID);
+        setImage( imagePath);
+        setPieceColor(color);
+    }
+    public ArrayList<Square> move(Square [][] boardSquares, int x, int y){
+        //The java.util.ArrayList.clear() method removes all of the elements from this list.The list will be empty after this call returns.
+        possibleSquares.clear();
+
+        if(getPieceColor().equals("w")){
+            if(x==0){
+                return possibleSquares;
+            }
+            if(boardSquares[x-1][y].getPiece()==null) {
+                possibleSquares.add(boardSquares[x - 1][y]);
+                if (x == 6) {
+                    if (boardSquares[4][y].getPiece() == null)
+                        possibleSquares.add(boardSquares[4][y]);
+                }
+            }
+            if ((y > 0) && (boardSquares[x - 1][y - 1].getPiece() != null) && (boardSquares[x - 1][y - 1].getPiece().getPieceColor() != this.getPieceColor()))
+                possibleSquares.add(boardSquares[x - 1][y - 1]);
+            if ((y < 7) && (boardSquares[x - 1][y + 1].getPiece() != null) && (boardSquares[x - 1][y + 1].getPiece().getPieceColor() != this.getPieceColor()))
+                possibleSquares.add(boardSquares[x - 1][y + 1]);
+        }
+        else if(getPieceColor().equals("b")) {
+            if (x == 8)
+                return possibleSquares;
+            if (boardSquares[x + 1][y].getPiece() == null) {
+                possibleSquares.add(boardSquares[x + 1][y]);
+                if (x == 1) {
+                    if (boardSquares[3][y].getPiece() == null)
+                        possibleSquares.add(boardSquares[3][y]);
+                }
+            }
+            if ((y > 0) && (boardSquares[x + 1][y - 1].getPiece() != null) && (boardSquares[x + 1][y - 1].getPiece().getPieceColor() != this.getPieceColor()))
+                possibleSquares.add(boardSquares[x + 1][y - 1]);
+            if ((y < 7) && (boardSquares[x + 1][y + 1].getPiece() != null) && (boardSquares[x + 1][y + 1].getPiece().getPieceColor() != this.getPieceColor()))
+                possibleSquares.add(boardSquares[x + 1][y + 1]);
+        }
+
+        return possibleSquares;
+
+    }
+}