1下面那一项是正确的AArrayList myList = new Object;BList myList = new ArrayList;CArrayList myList = new List;DList myList = new List;2根据下面的代码如果String s = null;会抛出NullPointerException异常的有① Ifs!=null &slength0②

• 日期: 2028-04-24 08:39:56
• 标签: 社会

1. B.List myList = new ArrayList();
2. B. 2和4
3. D. test ok and gbc

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