Complete the JUnit Assignment so the code is properly functioning

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public class JU09V {

/**

* This method accepts a number as parameter and then creates

* a sentence in the form of "The square root of 100 is 10.0"

* @param number >= 0

* @return

*/

public static String squareRootSentence(int number) {

String response = "";

double squareRoot = Math.sqrt(number);//get the square root

response = "The square root of "+number+" is "+String.format("%.1f",squareRoot);

return response;

}

/**

* This method accepts a number as parameter and then creates

* a sentence in the form of "9 ^ 2 == 81"

* @param base

* @param exponent

* @return

*/

public static String exponentSentence(int base,int exponent) {

String response = "";

//calculate the value and convert it to long

long value = (long)Math.pow(base, exponent);

response = base+" ^ "+exponent+ " == "+value;//create the response

return response;

}

/**

* The method builds a sentence with the name and phrase

* the person shouts. shout("Grace","Java") -> Grace loves to shout the phase "Java"!

* @param name

* @param phrase

* @return

*/

public static String shout(String name,String phrase) {

return name+" loves to shout the phase "+"\""+phrase+"\"!";

}

/**

* Builds a computer filepath given the drive letter, mainFolder and the filename.

* @param driveLetter

* @param mainFolder

* @param fileName

* @return

*/

public static String getFilePath(String driveLetter,String mainFolder,String fileName) {

return driveLetter+":\\"+mainFolder+"\\"+fileName;

}

/**

* epicSqrt method will return squareroot of both positive and negative integer

* @param value

* @return

*/

public static String epicSqrt(int value) {

int value1 = value;

if(value1 < 0)

value1 = (-1)*value1;//get absolute value if number is negative

double sqrt = Math.sqrt(value1);//get square root of value1

String response = "Square root of "+value+" is "+

String.format("%.1f", sqrt)+(value<0?"i":"");//add i at end if value id negative

return response;

}

/**

* Given 2 Stirngs word1 and word2, concatenate them except theor first letters

* @param word1

* @param word2

* @return

*/

public static String noFirstLetterConcat(String word1,String word2) {

return word1.substring(1).concat(word2.substring(1));

}

/**

* This method will return a Stirng that displays first position of the vowels a,e,i,o,u

* in the given sentence.

* @param sentence

* @return

*/

public static String findVowels(String sentence) {

char[] vowels = {'a','e','i','o','u'};//declare array of vowels

String sentInLower = sentence.toLowerCase();//convert sentence in lowercase

String response = "";

for(char currentVowel: vowels) {//for each vowel

int index = sentInLower.indexOf(currentVowel);//find the first occurance in sentInLower

response = response+"The first position of "+currentVowel+" is "+index+" ";//create sentence for this vowel

}

return response;

}

//Main method to test methods

public static void main(String[] args) {

System.out.println(squareRootSentence(100));

System.out.println(exponentSentence(9,2));

System.out.println(shout("Grace","Java"));

System.out.println(getFilePath("C", "Documents", "rap.mp3"));

System.out.println(epicSqrt(16));

System.out.println(epicSqrt(-16));

System.out.println(noFirstLetterConcat("java","code"));

System.out.println(findVowels("appleapp"));

}

}