need to refactor rotate

Crypto/Test/ROT13Test.java

         // When
         ROT13 cipher = new ROT13();
         String actual = cipher.rotate(s1, 'A');
-
         // Then
         assertTrue(actual.equals(s2));
     }
         // When
         ROT13 cipher = new ROT13();
         String actual = cipher.rotate(s1, 'D');
+        System.out.println(actual);
 
         // Then
         assertTrue(actual.equals(s2));
 
         // When
         String actual = cipher.encrypt(Q1);
-        System.out.println(actual);
+        System.out.println(Q1);
         System.out.println(A1);
         // Then
         assertTrue(actual.equals(A1));

Crypto/src/ROT13.java

 
     public String decrypt(String text) {
         String result = "";
-        int temp = 0;
         int rotator = cf-cs;
+        boolean isUppercase = false;
         for(int i=0; i<text.length(); i++){
-            temp = (int)text.charAt(i)-rotator;
+            isUppercase = Character.isUpperCase(text.charAt(i));
+            int temp = Character.toLowerCase(text.charAt(i));
+            if (temp<97|temp>122){
+            } else if(temp-rotator > 97){
+                temp = (int)text.charAt(i)-rotator;
+            } else {
+                temp = 122 - (96-(temp-rotator));
+            }
+            if(isUppercase){temp=Character.toUpperCase(temp);}
             result+= (char)temp;
         }
         return result;
     }
 
     public static String rotate(String s, Character c) {
-
-        return "";
+        String result = "";
+        int rotator = Character.toLowerCase(c)-'a';
+        boolean isUppercase = false;
+        for(int i=0; i<s.length(); i++){
+            isUppercase = Character.isUpperCase(s.charAt(i));
+            int temp = Character.toLowerCase(s.charAt(i));
+            if (temp<97|temp>122){
+            } else if(temp+rotator < 122){
+                temp = s.charAt(i)+rotator;
+            } else {
+                temp = 96 + ((temp+rotator)-122);
+            }
+            if(isUppercase){temp=Character.toUpperCase(temp);}
+            result+= (char)temp;
+        }
+        return result;
     }
 
 }