Draw Shapes and Walls, and Remove Walls

Setting a cell’s preferred size

The window did not show the entire line for the cell because the cell’s size has not been set yet.

1. In Cell.java, add a public method called getPreferredSize(). It should take no parameters and return a Dimension.
2. Create a new Dimension object called size, SIZE wide and SIZE high.
3. Return size.

    ...
 
  _________________ getPreferredSize(________) {
    ________________ size = new __________________;
    return ________;
  }
    ...