test

app/src/main/java/model/ArrayGrid.java

+package model;
+
+public class ArrayGrid implements Grid{
+
+    private Cell[][] cells;
+    private final  int numberOfRows ;
+    private final int numberOfColumns ;
+
+
+    public ArrayGrid(int numberOfRows,int numberOfColumns){
+        this.numberOfRows = numberOfRows;
+        this.numberOfColumns = numberOfColumns;
+        this.cells[numberOfRows][numberOfColumns]=new SquareCell();
+        try {
+             System.out.println(numberOfColumns<0 || numberOfRows<0);
+        }catch (IllegalArgumentException e){
+            System.out.println(e);
+        }
+    }
+
+}

app/src/main/java/model/SquareCell.java

@@ -36,5 +36,4 @@ public class SquareCell extends AbstractCell {
             this.neighbours.set(i,cells.get(i));
         }
     }
-
 }
\ No newline at end of file