[Java] Scanner(System.in) 从控制台输入

import java.util.*; public class ScannerTest{     public static void main(String[] args){         Scanner s = new Scanner(System.in);         while(true){             String str = s.nextLine();             if(str.equals("over")){                 System.exit(0);             }             System.out.println(str);         }     } } //注意Scanner类