Posting this question for the second time because answer was incorrect on the first one and for some reason I have to create a new post instead of getting the right answer on my initial post.

Write a java code of the following class diagram. (please note that cornfield yields 10kg per sqm and there are two types of wheat: common yields 8kg pr sqm, and spelt yields 7kg per sqm)

pkg Farm Field fields + addField(field : Field) : void + numberOfFields(): int + totalSize(): int - sizeInSqMeters: int + getSizelnSqMeters(): int GrainField + yieldPrSqMeterinkg(): double Lettuce Field lettuces PrSqMeter: int CornField WheatField + yieldPrSqMeterinkg(): double WheatType: String + yieldPrSqMeterinkg(): double A cornfield yields 10 kg pr square meter A wheatfield yields depending on the wheat type: common wheat yields 8 kg pr square meter, whereas spelt only yields 7 kg pr square meter