MarcFriedenberg.com » A simple encryption app. Use “java e word” to encrypt and “java d word” to decrypt (Java)

A simple encryption app. Use “java e word” to encrypt and “java d word” to decrypt (Java)

class crypt
{
 public static void main(String args[])
 {
  String mode=args[0];
  String word=args[1];
  if (mode.charAt(0)=='d')
  {
    System.out.println(word + " decoded is:");
    for (int i=0; i<word.length(); i++)
    {
    if (word.charAt(i)=='c')
     System.out.print("a");
    else if (word.charAt(i)=='v')
     System.out.print("b");
    else if (word.charAt(i)=='b')
     System.out.print("c");
    else if (word.charAt(i)=='k')
     System.out.print("d");
    else if (word.charAt(i)=='z')
     System.out.print("e");
    else if (word.charAt(i)=='a')
     System.out.print("f");
    else if (word.charAt(i)=='t')
     System.out.print("g");
    else if (word.charAt(i)=='n')
     System.out.print("h");
    else if (word.charAt(i)=='o')
     System.out.print("i");
    else if (word.charAt(i)=='s')
     System.out.print("j");
    else if (word.charAt(i)=='j')
     System.out.print("k");
    else if (word.charAt(i)=='m')
     System.out.print("l");
    else if (word.charAt(i)=='l')
     System.out.print("m");
    else if (word.charAt(i)=='p')
     System.out.print("n");
    else if (word.charAt(i)=='q')
     System.out.print("o");
    else if (word.charAt(i)=='r')
     System.out.print("p");
    else if (word.charAt(i)=='h')
     System.out.print("q");
    else if (word.charAt(i)=='u')
     System.out.print("r");
    else if (word.charAt(i)=='d')
     System.out.print("s");
    else if (word.charAt(i)=='y')
     System.out.print("t");
    else if (word.charAt(i)=='w')
     System.out.print("u");
    else if (word.charAt(i)=='x')
     System.out.print("v");
    else if (word.charAt(i)=='g')
     System.out.print("w");
    else if (word.charAt(i)=='f')
     System.out.print("x");
    else if (word.charAt(i)=='i')
     System.out.print("y");
    else if (word.charAt(i)=='e')
     System.out.print("z");
    else
     System.out.print(word.charAt(i));
    }
    System.out.println();
  }
  if (mode.charAt(0)=='e')
  {
   System.out.println(word + " in code is:");
   for (int i=0; i<word.length(); i++)
   {
    if (word.charAt(i)=='a')
     System.out.print("c");
    else if (word.charAt(i)=='b')
     System.out.print("v");
    else if (word.charAt(i)=='c')
     System.out.print("b");
    else if (word.charAt(i)=='d')
     System.out.print("k");
    else if (word.charAt(i)=='e')
     System.out.print("z");
    else if (word.charAt(i)=='f')
     System.out.print("a");
    else if (word.charAt(i)=='g')
     System.out.print("t");
    else if (word.charAt(i)=='h')
     System.out.print("n");
    else if (word.charAt(i)=='i')
     System.out.print("o");
    else if (word.charAt(i)=='j')
     System.out.print("s");
    else if (word.charAt(i)=='k')
     System.out.print("j");
    else if (word.charAt(i)=='l')
     System.out.print("m");
    else if (word.charAt(i)=='m')
     System.out.print("l");
    else if (word.charAt(i)=='n')
     System.out.print("p");
    else if (word.charAt(i)=='o')
     System.out.print("q");
    else if (word.charAt(i)=='p')
     System.out.print("r");
    else if (word.charAt(i)=='q')
     System.out.print("h");
    else if (word.charAt(i)=='r')
     System.out.print("u");
    else if (word.charAt(i)=='s')
     System.out.print("d");
    else if (word.charAt(i)=='t')
     System.out.print("y");
    else if (word.charAt(i)=='u')
     System.out.print("w");
    else if (word.charAt(i)=='v')
     System.out.print("x");
    else if (word.charAt(i)=='w')
     System.out.print("g");
    else if (word.charAt(i)=='x')
     System.out.print("f");
    else if (word.charAt(i)=='y')
     System.out.print("i");
    else if (word.charAt(i)=='z')
     System.out.print("e");
    else
     System.out.print(word.charAt(i));
   }
   System.out.println();
  }
 }
}