慕勒6922838
2018-07-29 18:03
Course[] course2 = {new Course("6","计算机网络"),new Course("7","单片机原理")};
coursesToSelect.add(2, Arrays.asList(course2));
Course temp6 = (Course)coursesToSelect.get(2);
Course temp7 = (Course)coursesToSelect.get(3);
System.out.println("又添加了两门课程:" + temp6.getId() + ":" +
temp6.getName() + "\n" + temp7.getId() + ":" + temp7.getName());
58:addAll
添加数组 用addAll
找到问题了,真是太粗心大意了
Java入门第三季
409792 学习 · 4340 问题
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