Add Cell Class and Block Class

Block.java

+import java.util.ArrayList;
+
+public class Block {
+
+    private ArrayList<Cell> allCells;
+    private int number;
+    private String turn;
+    public Block(){
+        allCells = new ArrayList<>();
+    }
+
+
+    public int getNumber() {
+        return number;
+    }
+
+    public void setNumber(int number) {
+        this.number = number;
+    }
+
+    public void createCells(){
+        Cell cell = new Cell();
+        for (int i = 0 ; i < 9  ; i++ ){
+            cell.setNumber(i);;
+            cell.setColor('O');
+            allCells.add(cell);
+        }
+    }
+
+    public void changePositionOfBlock(String turn){
+        Cell transporterCell;
+        if ( turn.equals("right")){
+            allCells.add(2,allCells.get(0));
+            allCells.remove(0);
+            allCells.add(0,allCells.get(2));
+            allCells.remove(3);
+
+            allCells.add(5,allCells.get(1));
+            allCells.remove(1);
+            allCells.add(1,allCells.get(5));
+            allCells.remove(6);
+
+            allCells.add(8,allCells.get(0));
+            allCells.remove(8);
+            allCells.add(0,allCells.get(8));
+            allCells.remove(9);
+
+            allCells.add(3,allCells.get(1));
+            allCells.remove(1);
+            allCells.add(1,allCells.get(3));
+            allCells.remove(4);
+
+            allCells.add(6,allCells.get(0));
+            allCells.remove(0);
+            allCells.add(0,allCells.get(6));
+            allCells.remove(7);
+
+            allCells.add(7,allCells.get(3));
+            allCells.remove(3);
+            allCells.add(3,allCells.get(7));
+            allCells.remove(8);
+        }
+        else if ( turn.equals("left")){
+            turn = "right";
+            changePositionOfBlock(turn);
+            changePositionOfBlock(turn);
+            changePositionOfBlock(turn);
+        }
+        else {
+            System.out.println("this position doesn't exist");
+        }
+    }
+
+    public ArrayList<Cell> getAllCells() {
+        return allCells;
+    }
+}

Cell.java

+public class Cell {
+    private Character color ;
+    private int number ;
+
+    public Cell(){
+        color = 'O';
+    }
+
+    public int getNumber() {
+        return number;
+    }
+
+    public void setNumber(int number) {
+        this.number = number;
+    }
+
+    public Character getColor() {
+        return color;
+    }
+
+    public void setColor(Character color) {
+        this.color = color;
+    }
+}