1、 当程序需接收用户通过键盘输入的指令或数据,如计算表达式时,可利用Scanner类便捷地实现输入获取与处理。 2、 使用Scanner类读取用户输入时,程序会在控制台持续等待,直至用户按下回车键确认输入。此时,输入的内容将被传递给Scanner对象。若需获取该 ...
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