LinkedHashMapDemo

import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;

public class LinkedHashMapDemo {

    public static final int KEY_VALUES_COUNT = 4;

    public static void main(String[] args) {
        HashMap<String, Integer> studentHashMap = new HashMap<>();
        LinkedHashMap<String, Integer> studentLinkedHashMap = new LinkedHashMap<>();

        String[] strings = {"Brave", "Brilliant", "Joy", "Confidence"};

        for (int i = 0; i < strings.length; i++) {
            studentHashMap.put(strings[i], i);
            studentLinkedHashMap.put(strings[i], i);
        }

        printMaps(studentHashMap, studentLinkedHashMap);
    }

    private static void printMaps(HashMap<String, Integer> studentHashMap, LinkedHashMap<String, Integer> studentLinkedHashMap) {
        Iterator<String> iter1 = studentHashMap.keySet().iterator();
        Iterator<String> iter2 = studentLinkedHashMap.keySet().iterator();

        System.out.print("HashMapKeys || LinkedHashMap\n");
        String indentation = "          ";
        StringBuilder result = new StringBuilder();
        for (int i = 0; i < KEY_VALUES_COUNT; i++) {
            String studentHashMapKey = iter1.next();
            String studentLinkedHashMapKey = iter2.next();

            int ind = studentHashMapKey.length() - 1;
            String indent;
            if (ind == indentation.length()){
                indent = "";
            } else {
                indent = indentation.substring(ind);
            }
            result.append(indent).append(studentHashMapKey).append(" || ").append(studentLinkedHashMapKey).append(System.lineSeparator());
        }

        System.out.print(result);
    }
}