是否有任何第三方免费的Java库可以根据学生的分数计算成绩? [英]any third party free Java library that can calculate grades based upon marks of student?
如何使用Marvin Java库(或任何其他免费库)附加2个BIG图像? [英]How can I append 2 BIG images using Marvin java library(or any other free lib)?