Adds user input for more than one shift option. (from 1-25)

Crypto/src/Main.java

@@ -7,14 +7,40 @@ public class Main {
 
 
 
-    public static void main(String[] args) throws IOException {
+     public static void main(String[] args) throws IOException {
+        Scanner input = new Scanner(System.in);
+        System.out.printf("Please enter the key. (How many places you want each letter to shift):"); //Added custom number shift
+        String key = input.nextLine();
+        try {
+            Integer.parseInt(key);
+            try {
+                if ((Integer.parseInt(key) > 26) || 0 > (Integer.parseInt(key))) {
+                    System.out.println("Invalid Range");
+                    System.exit(0);
+                }
+            } catch (NumberFormatException e) {
+                System.out.println("It needs to be a number. ");
+            }
+        }catch (Exception e) {
+            System.out.println("An unknown error has occured");
+        }
+
+
+        int keys = Integer.parseInt(key);
+
+
         InputStream in = new FileInputStream("sonnet18.txt");
         String body = IOUtils.toString(in, StandardCharsets.UTF_8.name());
-        System.out.println(body);
+        System.out.printf("\n\nNormal: \n\n%s\n\n", body); // Added formatting for user accessibility
         PrintStream out = new PrintStream(new FileOutputStream("sonnet18.enc"));
-        ROT13 rot13 = new ROT13();
+        ROT13 rot13 = new ROT13(keys);
         String output = rot13.encrypt(body);
+        System.out.printf("Encrypted:\n\n%s\n\n", output); // Shows the output/ result of the encryption
         out.append(output);
         out.flush();
-    }
-}
+
+
+
+
+
+}}

Crypto/src/ROT13.java

@@ -10,9 +10,9 @@ public class ROT13  {
         this.shift = temp;
     }
 
-    ROT13() {
-        this.shift = 13;
-    }
+    ROT13(int key) {
+        this.shift = key;
+    } //Takes in a user number for how many places the letter should shift
 
     public String crypt(String text) throws UnsupportedOperationException {
         return crypt(text, shift);