三 流程控制
3.1 scanner
psvm
new Scanner(System.in) alt+enter+enter 自动补全
Scanner scanner = new Scanner(System.in);
3.2 if
3.3 switch
3.4 while
3.5 for
标签：Java,Scanner,day2,System,enter,scanner From： https://www.cnblogs.com/piaoguo326/p/17838056.html
psvm
new Scanner(System.in) alt+enter+enter 自动补全
Scanner scanner = new Scanner(System.in);
标签：Java,Scanner,day2,System,enter,scanner From： https://www.cnblogs.com/piaoguo326/p/17838056.html