2017 - 10 -18 常见对象 Scanner String

java 引用  https://www.zhihu.com/question/31203609 c++引用和java引用   http://blog.csdn.net/waitforfree/article/details/51030013 java的引用和c++的指针更像 1 Scanner(jdk 5之后) (1)improt java.util.Scanner;    Scanner sc

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