用java写的凯撒加密器源码

packagecn.jbit.encryption;importjava.util.Scanner;publicclassSwitcher{publicstaticvoidmain(String[]args){System.out.println("******************欢迎使用凯撒加密器******************");Scannerinput=newScanner(System.in);System.out.print("\n请选择操作(1.加密,2.解密)：");intoperator=input.nextInt()