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问题详情

已知如下定义:String s = "story"; 下面哪个语句不是合法的( )

A、s += "books";

B、s = s + 100;

C、int len = s.length;

D、String t = s + “abc”;

时间：2021-09-01 16:43 关键词：青书学堂平顶山学院计算机科学与技术面向对象程序设计(专升本)

答案解析

C

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