JD stands for black, where D stands for Dark dark color, while J stands for fruit diameter, and a J stands for fruit with a diameter of 26~28mm, so JD stands for cherries with dark color but average fruit size.

cherries can be divided into three grades according to color: L, R and D. In addition to this representation, there are JR, JL, etc., where R is the abbreviation of Red, and JR stands for red cherries with smaller fruit diameter. L stands for Light color light, and a JL stands for cherries with lighter colors and smaller fruits.