The errors are as of below, based on the numberings in the image:
1 and 2: Index, EditItemDescriptor and EditDeliveryDescriptor should be showing solid diamonds instead, as they do not exist if the EditCommand classes do not exist.
3 and 4: These classes are extending the abstract classes, so should not be using the 'implements' hollow triangle and dotted lines.
The errors are as of below, based on the numberings in the image:
1 and 2: Index, EditItemDescriptor and EditDeliveryDescriptor should be showing solid diamonds instead, as they do not exist if the EditCommand classes do not exist.
3 and 4: These classes are extending the abstract classes, so should not be using the 'implements' hollow triangle and dotted lines.