Java code

Run the following program and explain what it does. Modify this program so that it uses chaining, Make the array to be an array of pointers. Each item has a name, phone number and a field called next. You can use the name as the key and you can use the same hash function. Main java file: public class Main {public static void main(String[] args) {//TODO Auto-generated method stub Chaining h = new Chaining(); h.add("Dave", "9999"); h.add("Paula", "8888") System.out.println("Paula phone number is "+ h.get ("Paulu"));}} Chaining java file: public class Chaining {private String [] test; public Chaining() {test = new String[10];} public int HashFunc(String s) {return (s.length());} public void add (String name, String phone) {test[HashFunc(name)] = phone;} public String get(String name) {return test[HashFunc(name)];}