Its a lot but its all in small methods and all tested

pom.xml

@@ -7,6 +7,18 @@
     <groupId>io.zipcoder</groupId>
     <artifactId>InterviewProblem5</artifactId>
     <version>1.0-SNAPSHOT</version>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
 
     <dependencies>
         <!-- https://mvnrepository.com/artifact/junit/junit -->

src/main/java/io/zipcoder/Formatting.java

@@ -0,0 +1,74 @@
+package io.zipcoder;
+
+public class Formatting {
+
+    public static String getNewTime(String s){
+        String makeMilitary = convertTime(s);
+        String hundreds = changeFormatHundred(makeMilitary);
+        String hours = changeFormatHours(makeMilitary);
+        String militaryTime = hundreds + hours;
+        System.out.println(militaryTime);
+        return militaryTime;
+    }
+
+    public static String convertTime(String s){
+        if(s.contains("AM")){
+            s = s.replace("AM", "");
+            String[] timeArray = s.split(":");
+            if(timeArray[0].equals("12")) {
+                timeArray[0] = "00";
+            }
+            if(timeArray[0].equals("12") || timeArray[0].equals("11") || timeArray[0].equals("10")){
+                s = timeArray[0] + ":" + timeArray[1];
+            }
+            else if(!timeArray[0].equals("12") || timeArray[0].equals("11") || timeArray[0].equals("10")) {
+                s = "0" + timeArray[0] + ":" + timeArray[1];
+            }
+        }
+        else if(s.contains("PM")){
+            s = s.replace("PM", "");
+            String[] timeArray = s.split(":");
+            if(!timeArray[0].equals("12")){
+                timeArray[0] = Integer.toString(Integer.parseInt(timeArray[0])+12);
+            }
+            s = timeArray[0] + ":" + timeArray[1];
+        }
+        System.out.println(s);
+        return s;
+    }
+
+    public static String changeFormatHundred(String s){
+        String[] newTime = s.split(":");
+        String hundred = NumberRepresentation.getHundred(newTime[0]);
+        System.out.println(hundred + " Hundred");
+        return hundred + " Hundred";
+        }
+
+    public static String changeFormatHours(String s){
+        String[] newTime = s.split(":");
+        int result = Integer.valueOf(newTime[1]);
+        String newNumber = "";
+        if(result < 10){
+            newNumber = " Zero" + NumberRepresentation.getHours(result);
+        } else if(result > 10 && result < 19){
+            newNumber = HigherMinuteConverter.tenToTwenty(result);
+
+        }else if(result > 20 && result < 29){
+            newNumber = " Twenty" + HigherMinuteConverter.higherMinutes(result);
+
+        }else if(result > 30 && result < 39){
+            newNumber = " Thirty" + HigherMinuteConverter.higherMinutes(result);
+
+        }else if(result > 40 && result < 49){
+            newNumber = " Forty" + HigherMinuteConverter.higherMinutes(result);
+
+        }else if(result > 50 && result < 59){
+            newNumber = " Fifty" + HigherMinuteConverter.higherMinutes(result);
+
+        }
+        System.out.println(newNumber + " Hours");
+        return newNumber + " Hours";
+    }
+
+}
+

src/main/java/io/zipcoder/HigherMinuteConverter.java

@@ -0,0 +1,62 @@
+package io.zipcoder;
+
+public class HigherMinuteConverter {
+
+
+    public static String tenToTwenty(int i){
+        String teens = "";
+        switch (i){
+            case 10 : teens = "Ten"; break;
+            case 11 : teens = "Eleven"; break;
+            case 12 : teens = "Twelve"; break;
+            case 13 : teens = "Thirteen"; break;
+            case 14 : teens = "Fourteen"; break;
+            case 15 : teens = "Fifteen"; break;
+            case 16 : teens = "Sixteen"; break;
+            case 17 : teens = "Seventeen"; break;
+            case 18 : teens = "Eighteen"; break;
+            case 19 : teens = "Nineteen"; break;
+        }
+        return teens;
+    }
+
+
+    public static String higherMinutes(int i){
+        String higherNumbers = "";
+
+        if(i == 20 || i == 30 || i == 40 || i == 50) {
+                higherNumbers = "";
+            }
+        else if(i == 21 || i == 31 || i == 41 || i == 51) {
+            higherNumbers = "one";
+        }
+        else if(i == 22 || i == 32 || i == 42 || i == 52) {
+            higherNumbers = "two";
+        }
+        else if(i == 23 || i == 33 || i == 43 || i == 53) {
+            higherNumbers = "three";
+        }
+        else if(i == 24 || i == 34 || i == 44 || i == 54) {
+            higherNumbers = "four";
+        }
+        else if(i == 25 || i == 35 || i == 45 || i == 55) {
+            higherNumbers = "five";
+        }
+        else if(i == 26|| i == 36 || i == 46 || i == 56) {
+            higherNumbers = "six";
+        }
+        else if(i == 27 || i == 37 || i == 47 || i == 57) {
+            higherNumbers = "seven";
+        }
+        else if(i == 28 || i == 38 || i == 48 || i == 58) {
+            higherNumbers = "eight";
+        }
+        else if(i == 29 || i == 39 || i == 49 || i == 59) {
+            higherNumbers = "nine";
+        }
+        return higherNumbers;
+        }
+
+    }
+
+

src/main/java/io/zipcoder/NumberRepresentation.java

@@ -0,0 +1,84 @@
+package io.zipcoder;
+
+public class NumberRepresentation {
+
+    public static String numberToWord = "";
+    public static String intToWord = "";
+
+    public static String getHundred(String s) {
+        switch (s) {
+            case "00": numberToWord = "Zero"; break;
+            case "01": numberToWord = "Zero One"; break;
+            case "02": numberToWord = "Zero Two"; break;
+            case "03": numberToWord = "Zero Three"; break;
+            case "04": numberToWord = "Zero Four"; break;
+            case "05": numberToWord = "Zero Five"; break;
+            case "06": numberToWord = "Zero Six"; break;
+            case "07": numberToWord = "Zero Seven"; break;
+            case "08": numberToWord = "Zero Eight"; break;
+            case "09": numberToWord = "Zero Nine"; break;
+            case "10": numberToWord = "Ten"; break;
+            case "11": numberToWord = "Eleven"; break;
+            case "12": numberToWord = "Twelve"; break;
+            case "13": numberToWord = "Thirteen"; break;
+            case "14": numberToWord = "Fourteen"; break;
+            case "15": numberToWord = "Fifteen"; break;
+            case "16": numberToWord = "Sixteen"; break;
+            case "17": numberToWord = "Seventeen"; break;
+            case "18": numberToWord = "Eighteen"; break;
+            case "19": numberToWord = "Nineteen"; break;
+            case "20": numberToWord = "Twenty"; break;
+            case "21": numberToWord = "Twenty One"; break;
+            case "22": numberToWord = "Twenty Two"; break;
+            case "23": numberToWord = "Twenty Three";break;
+            case "24": numberToWord = "Twenty Four"; break;
+            }
+        return numberToWord;
+    }
+
+    public static String getHours(int i) {
+        switch (i) {
+            case 0: {
+                intToWord = "Zero";
+                break;
+            }
+            case 1: {
+                intToWord = " One";
+                break;
+            }
+            case 2: {
+                intToWord = " Two";
+                break;
+            }
+            case 3: {
+                intToWord = " Three";
+                break;
+            }
+            case 4: {
+                intToWord = " Four";
+                break;
+            }
+            case 5: {
+                intToWord = " Five";
+                break;
+            }
+            case 6: {
+                intToWord = " Six";
+                break;
+            }
+            case 7: {
+                intToWord = " Seven";
+                break;
+            }
+            case 8: {
+                intToWord = " Eight";
+                break;
+            }
+            case 9: {
+                intToWord = " Nine";
+                break;
+            }
+        }
+        return intToWord;
+    }
+}

src/main/java/io/zipcoder/Problem6.java

@@ -1,4 +1,9 @@
 package io.zipcoder;
 
 public class Problem6 {
+
+public String getMilitaryTime(String s){
+    String timeAsWords = Formatting.getNewTime(s);
+    return timeAsWords;
+}
 }

src/test/java/io/zipcoder/FormattingTest.java

@@ -0,0 +1,74 @@
+package io.zipcoder;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class FormattingTest {
+
+    @Test
+    public void convertTimeTest(){
+        //Given
+        String input = "1:30AM";
+        String expected = "01:30";
+        //When
+        String actual = Formatting.convertTime(input);
+        //Then
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void convertTimeTest2(){
+        //Given
+        String input = "1:30PM";
+        String expected = "13:30";
+        //When
+        String actual = Formatting.convertTime(input);
+        //Then
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void changeFormatHundredTest(){
+        //Given
+        String input = "01:30";
+        String expected = "Zero One Hundred";
+        //When
+        String actual = Formatting.changeFormatHundred(input);
+        //Then
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void changeFormatHundredTest2(){
+        //Given
+        String input = "13:30";
+        String expected = "Thirteen Hundred";
+        //When
+        String actual = Formatting.changeFormatHundred(input);
+        //Then
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void changeFormatHoursTest(){
+        //Given
+        String input = "13:03";
+        String expected = " Zero Three Hours";
+        //When
+        String actual = Formatting.changeFormatHours(input);
+        //Then
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void getNewTimeTest() {
+        //Given
+        String input = "11:03AM";
+        String expected = "Eleven Hundred Zero Three Hours";
+        //When
+        String actual = Formatting.getNewTime(input);
+        //Then
+        Assert.assertEquals(expected, actual);
+    }
+
+}

src/test/java/io/zipcoder/HigherMinuteConverterTest.java

@@ -0,0 +1,29 @@
+package io.zipcoder;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class HigherMinuteConverterTest {
+
+    @Test
+    public void tenToTwentyTest(){
+        //Given
+        int input = 11;
+        String expected = "Eleven";
+        //When
+        String actual = HigherMinuteConverter.tenToTwenty(input);
+        //Then
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void higherMinutesTest(){
+        //Given
+        int input = 31;
+        String expected = "one";
+        //When
+        String actual = HigherMinuteConverter.higherMinutes(input);
+        //Then
+        Assert.assertEquals(expected, actual);
+    }
+}

src/test/java/io/zipcoder/Problem6Test.java

@@ -1,4 +1,19 @@
 package io.zipcoder;
 
+import org.junit.Assert;
+import org.junit.Test;
+
 public class Problem6Test {
+
+    @Test
+    public void getMilitaryTimeTest() {
+        //Given
+        String input = "1:03AM";
+        String expected = "Zero One Hundred Zero Three Hours";
+        //When
+        String actual = Formatting.getNewTime(input);
+        //Then
+        Assert.assertEquals(expected, actual);
+    }
+
 }