I can't solve the error from line 37.
package com.codegym.task.task08.task0817;
import java.util.*;
/*
We don't need repeats
*/
public class Solution {
public static HashMap<String, String> createMap() {
HashMap<String, String> hmap = new HashMap<>();
hmap.put("A","K");
hmap.put("B","L");
hmap.put("C","M");
hmap.put("D","K");
hmap.put("E","O");
hmap.put("F","P");
hmap.put("G","K");
hmap.put("H","R");
hmap.put("I","S");
hmap.put("J","K");
return hmap;
}
public static void removeFirstNameDuplicates(Map<String, String> map) {
Iterator<Map.Entry<String, String>> entries = map.entrySet().iterator();
HashMap <String, Integer> counter = new HashMap<>();
String fname = new String();
while (entries.hasNext()) {
fname = entries.next().getValue();
counter.put(fname, Collections.frequency(map.values(), fname)); //Collections.frequency(map.values(), entries.next().getValue())
}
Iterator <Map.Entry<String, Integer>> evaluator = counter.entrySet().iterator();
HashMap<String, Integer> fname2 = new HashMap<String, Integer>();
while (evaluator.hasNext()) {
fname2 = evaluator.next();
if (fname2.getValue()>1) {
removeItemFromMapByValue(map, fname2.getKey());
}
}
map.forEach((k,v) -> System.out.println("key: "+k+" value: "+v));
}
public static void removeItemFromMapByValue(Map<String, String> map, String value) {
HashMap<String, String> copy = new HashMap<String, String>(map);
for (Map.Entry<String, String> pair : copy.entrySet()) {
if (pair.getValue().equals(value))
map.remove(pair.getKey());
}
}
public static void main(String[] args) {
removeFirstNameDuplicates(createMap());
}
}