oops, added part2

Crypto/src/ROT13.java

@@ -1,3 +1,8 @@
+import java.io.File;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.Scanner;
+
 public class ROT13  {
 
     private int shift;
@@ -22,7 +27,6 @@ public class ROT13  {
             else if (Character.isUpperCase((text.charAt(i))))
                 encrypted.append((char) ('A' + ( (text.charAt(i) - 'A') + shift) %26));
             else encrypted.append(text.charAt(i));
-            System.out.println(encrypted);
         }
         return encrypted.toString();
     }
@@ -46,4 +50,38 @@ public class ROT13  {
         return beginning + end;
     }
 
+    public String encryptFile(String readFile, String writeFile) {
+        File file = new File(readFile);
+        String encrypted = null;
+        try(Scanner scanner = new Scanner(file)){
+
+            String result = fileString(readFile);
+            encrypted = encrypt(result);
+
+            PrintWriter writer = new PrintWriter(writeFile, "UTF-8");
+            writer.print(encrypted);
+            writer.close();
+
+        }catch(IOException e){
+            e.printStackTrace();
+        }
+        return encrypted;
+    }
+    public String fileString (String fileName) {
+        File file = new File(fileName);
+        StringBuilder result = new StringBuilder("");
+        try(Scanner scanner = new Scanner(file)){
+            while(scanner.hasNextLine()){
+                String line = scanner.nextLine();
+                result.append(line).append("\n");
+            }
+            scanner.close();
+            return result.toString();
+        }
+        catch(IOException e){
+            e.printStackTrace();
+            return null;
+        }
+    }
+
 }

Crypto/src/ROT13Test.java

@@ -1,3 +1,4 @@
+import org.junit.Assert;
 import org.junit.Test;
 
 import static org.junit.Assert.*;
@@ -87,5 +88,13 @@ public class ROT13Test {
         // Then
         assertTrue(actual.equals(Q1));
     }
+    @Test
+    public void sonnetTest() {
+        ROT13 cipher = new ROT13();
+        String expected = cipher.fileString("sonnet18.txt");
+        cipher.encryptFile("sonnet18.txt", "sonnet18.enc");
+        String actual = cipher.encryptFile("sonnet18.enc", "sonnet18.enc");
+        Assert.assertEquals(expected, actual);
+    }
 
 }

SimpleCrypt.iml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
-  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_5">
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8">
     <output url="file://$MODULE_DIR$/target/classes" />
     <output-test url="file://$MODULE_DIR$/target/test-classes" />
     <content url="file://$MODULE_DIR$">

sonnet18.enc

@@ -0,0 +1,14 @@
+Shall I compare thee to a summer’s day?
+Thou art more lovely and more temperate:
+Rough winds do shake the darling buds of May,
+And summer’s lease hath all too short a date;
+Sometime too hot the eye of heaven shines,
+And often is his gold complexion dimm'd;
+And every fair from fair sometime declines,
+By chance or nature’s changing course untrimm'd;
+But thy eternal summer shall not fade,
+Nor lose possession of that fair thou ow’st;
+Nor shall death brag thou wander’st in his shade,
+When in eternal lines to time thou grow’st:
+   So long as men can breathe or eyes can see,
+   So long lives this, and this gives life to thee.