Count frequency of a string in a given array without using any functions or classes in Java.

frequency.java

import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Main {

    static void staircase(String[] votes) {

        ArrayList<String> arrayList = new ArrayList<>();
        for(int i = 0; i < votes.length; i++){
            arrayList.add(votes[i]);
        }

        Collections.sort(arrayList);

        String[] sortedArray = arrayList.toArray(new String[arrayList.size()]);

        int voteCount = 1, winnerCount = 0;
        String lastName = "";
        String winnerName = sortedArray[sortedArray.length - 1];

        for(int i = 0; i < sortedArray.length; i++){
            if(sortedArray[i] == lastName) {
                voteCount++;
                if(voteCount >= winnerCount){
                    winnerName = lastName;
                    winnerCount = voteCount;
                }
            } else {
                voteCount = 1;
                lastName = sortedArray[i];
            }
        }

        System.out.println(winnerName);

        String s = Arrays.toString(arrayList.toArray());
        System.out.println(s);
    }

    public static void main(String[] args) {
        String[] array = {"Alex", "Michael", "Harry", "Dave", "Michael", "Victor", "Harry", "Alex", "Mary", "Mary"};
        staircase(array);

    }
}