有代码：1. String s = "write a line to a file";2. w.print( s + "\n" );哪一个是对的？ -题库考试答案搜索网

有代码：1. String s = "write a line to a file";2. w.print( s + "\n" );哪一个是对的？

单选题

2021-09-01 22:17

A、w即可以是PrintWriter类型，也可以是BufferedWriter类型。
B、w即不可以是PrintWriter类型，也不可以是BufferedWriter类型。
C、w可以是BufferedWriter类型，但不可以是PrintWriter类型。
D、w以是PrintWriter类型，但不可以是BufferedWriter类型。

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正确答案

D

试题解析

标签：青书学堂商丘师范学院Java语言大连工业大学计算机科学与技术专升本 Java技术与应用作业21

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