java - Caesar Cipher with at least 5 methods -

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i have been tasked with creating caesar cipher has main method, , has other methods named how want them within project requirements.

i have been emailing teacher's assistant , forth on since haven't been directly told anyway on how shift ascii lettering i've been trying around on google , here bit , have set not use many methods i've been asked or it's in c language.

my question stand is, netbeans ide 8.1 proper code shift .txt file.

if asked i'll put rubric if asked of me.

package mcintosh_project3; import java.io.file; import java.util.scanner; /**  *james mcintosh  *project 03  */ public class mcintosh_project3  {     public static void main(string[] args, int option) throws exception     {       boolean run = true;         file inputfile;         if (option == 1)         {             scanner input = new scanner(system.in);             system.out.println("what text file encrypt?");             string inputfile = input.nextline();                       }         if (option == 2)         {             scanner input = new scanner(system.in);             system.out.println("what text file decrypt?");             string inputfile = input.nextline();          }         if (option == 3)         {             run = false;         }         if (option > 3)         {             system.out.println("invalid option, please choose again.");             }      }      public static int getmenuoption() throws exception     {        int option;          scanner input = new scanner(system.in);          system.out.println("1. encrypt");         system.out.println("2. decrypt");         system.out.println("3. quit");         system.out.println("what do?");         option = input.nextint();         return option;     }      public static int key(file inputfile, int option) throws exception     {           public static int key(file inputfile, int option) throws exception {      char key = 'a';      if (option == 1)     {         key += 5;     }     if (option == 2)     {         key -= 5;     }     return key;  }  public static void encrypt(file inputfile, int key, int option) throws exception {     if (option == 1)     {         key += 5;     }     system.out.println(inputfile); //incorrect of right } public static void decrypt(file inputfile, int key, int option) throws exception {     if (option == 2)     {         key -= 5;     } }

}

the errors coming these lines: 

inputfile chara += 5; inputfile chara -= 5;

it looks trying can arrays, , every chara inputfile. that's not valid java, though. if want read file, you'll want use inputstream. check out example here.

hopefully gets started.


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