finished changeHamToLeon method

src/main/java/HamletParser.java

@@ -1,6 +1,9 @@
 import java.io.File;
 import java.io.IOException;
+import java.util.Arrays;
 import java.util.Scanner;
+import java.util.regex.Pattern;
+import java.util.regex.Matcher;
 
 /**
  * Created by thook on 10/7/15.
@@ -8,11 +11,18 @@ import java.util.Scanner;
 public class HamletParser {
 
     private String hamletData;
+    private String[] words;
 
     public HamletParser(){
         this.hamletData = loadFile();
     }
 
+    // My constructor
+    public HamletParser(String input) {
+        this.hamletData = input;
+        this.words = input.split("\\W");
+    }
+
     private String loadFile(){
         ClassLoader classLoader = getClass().getClassLoader();
         File file = new File(classLoader.getResource("hamlet.txt").getFile());
@@ -23,9 +33,8 @@ public class HamletParser {
                 String line = scanner.nextLine();
                 result.append(line).append("\n");
             }
-
             scanner.close();
-        }catch(IOException e){
+        } catch(IOException e) {
             e.printStackTrace();
         }
 
@@ -36,4 +45,21 @@ public class HamletParser {
         return hamletData;
     }
 
+    public void changeHamletToLeon() {
+        String HamletString = "Hamlet";
+        String LeonString = "Leon";
+
+        Pattern HamletPattern = Pattern.compile(HamletString);
+        Matcher HamletMatcher = HamletPattern.matcher(hamletData);
+        hamletData = HamletMatcher.replaceAll(LeonString);
+    }
+
+    public static void main(String[] args) {
+        String inputString = "Change hamleta;ldsfjkhamletHamlet and Hamlet and also Hamlet to Leon";
+        HamletParser hamletParser = new HamletParser(inputString);
+        System.out.println(hamletParser.getHamletData());
+        hamletParser.changeHamletToLeon();
+        System.out.println(hamletParser.getHamletData());
+    }
+
 }

src/test/java/HamletParserTest.java

@@ -1,3 +1,4 @@
+import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
 
@@ -15,6 +16,15 @@ public class HamletParserTest {
 
     @Test
     public void testChangeHamletToLeon() {
+        // Given
+        String inputString = "Change Hamlet to Leon";
+        String expectedString = "Change Leon to Leon";
+        hamletParser = new HamletParser(inputString);
+        // When
+        hamletParser.changeHamletToLeon();
+        String actualString = hamletParser.getHamletData();
+        // Then
+        Assert.assertEquals(expectedString, actualString);
     }
 
     @Test