啊啊啊,哪里错了
Course cr =(Course) (coursesToSelect.get(j));
Course c = (Course) it.next();
都指向同一个错误:Exception in thread "main" java.lang.ClassCastException: java.lang.String cannot be cast to ArrayList.Course
我要怎么改呢
Course cr =(Course) (coursesToSelect.get(j));
Course c = (Course) it.next();
都指向同一个错误:Exception in thread "main" java.lang.ClassCastException: java.lang.String cannot be cast to ArrayList.Course
我要怎么改呢
2019-10-05
举报