這個是下標越界了嗎？如果要改的話應(yīng)該怎么改呢？
Course[] course2 = {new Course("6","計算機網(wǎng)絡(luò)"),new Course("7","單片機原理")};
coursesToSelect.add(2, Arrays.asList(course2));
Course temp6 = (Course)coursesToSelect.get(2);
Course temp7 = (Course)coursesToSelect.get(3);
System.out.println("又添加了兩門課程：" + temp6.getId() + ":" +?
temp6.getName() + "\n" + temp7.getId() + ":" + temp7.getName());
2018-08-02
58:addAll
2018-08-04
添加數(shù)組 用addAll
2018-07-29
找到問題了，真是太粗心大意了