Return the most repeating word in a String using HashMap

import java.util.*;
 
class Main {
 
    static StringBuilder findWord(StringBuilder[] arr)
    {
 
        HashMap<StringBuilder, Integer> hs = new HashMap<StringBuilder, Integer>();
 
        for (int i = 0; i < arr.length; i++) {
            if (hs.containsKey(arr[i])) {
                hs.put(arr[i], hs.get(arr[i]) + 1);
            }
            else {
                hs.put(arr[i], 1);
            }
        }
 
        Set<Map.Entry<StringBuilder, Integer> > set = hs.entrySet();
        StringBuilder key=new StringBuilder();
        key.append("");
        int value = 0;
 
        for (Map.Entry<StringBuilder, Integer> me : set) {
            if (me.getValue() > value) {
                value = me.getValue();
                key = me.getKey();
            }
        }
 
        return key;
    }
 
    // Driver code
    public static void main(String[] args)
    {
        String[] str={"saloni","saloni","yinkrt","tinker"};
        StringBuilder[] sb=new StringBuilder[str.length];
        for (int i = 0; i < sb.length; i++)
            sb[i] = new StringBuilder ("");
        for(int i=0;i<sb.length;i++)
            sb[i].append(str[i]);
        StringBuilder res = findWord(sb);
        System.out.println(res);
    }
}