Please do the TODO sections in the Distance class in Java. The tests class is below for the fields format.

public class Distance { protected String description; protected String distance; public Distance() { // TODO: Initialize the fields using the format shown in the Tests // class. public Distance(int x) { // TODO: Convert x to binary. See the Integer class documentation. String bits = ""; description = "Number of 1s in binary " + x + " (" + bits + ")"; // TODO: Calculate the number of 1s in the binary representation of x, // and assign the result to the distance field. public Distance(String s) { description = "Sum of chars in "" + S + " ""; // TODO: Calculate the sum of the ASCII codes of the characters in the // given String. Assign the sum to the distance field. @Override public String toString() { return description + ":" + distance; public class Tests { public static void main(String[] args) { Distance emptyDist = new Distance(); String emptyDistans = "No argument: 0"; test(emptyDist, emptyDistans, "Distance()"); Distance intDist = new Distance(5); String intDistAns = "Number of 1s in binary 5 (101): 2"; test(intDist, intDistAns, "Distance(int)"); Distance strDist = new Distance ("Hi!"); String strDistAns = "Sum of chars in \"Hi!\": 210"; test (strDist, strDistAns, "Distance(String)"); // Note that a Euclidean object can be assigned to a Distance variable. Distance eucDist = new Euclidean(3, 0, 0, 4); String eucDistans - "Euclidean distance between (3, 0) and (0, 4): 5.0"; test(eucDist, eucDistAns, "Euclidean(int, int, int, int)"); // Note that a Hamming object can be assigned to a Distance variable. Distance strHammDist = new Hamming("cat", "sat"); String strHammDistAns = "Hamming distance between cat and sat: 1"; test(strHammDist, strHammDistans, "Hamming (String, String)"); Distance intHammDist = new Hamming (4, 5); String intHammDistAns = "Hamming distance between 100 and 101: 1"; test(intHammDist, intHammDistans, "Hamming(int, int)"); * A helper method for main that tests the toString output of a Distance * object. The method prints an error message if the output is incorrect. * @param obj a Distance object. * @param ans the correct toString output. * @param testName a description of the constructor used to create obj. public static void test(Distance obj, String ans, String testName) { if (!obj.toString().equals(ans)) { System.out.println("Incorrect " + testName); System.out.println("Expected: " + ans); System.out.println("Returned: " + obj.toString(); System.out.println()