Hashmap error: incompatible types

Question

I made a hashmap that stores roman numerals as keys and their decimal numbers as values. The error says "incompatible types - found java.lang.Object but expected int". I'm just trying to get the value of the roman numeral when I write "conversions.get(numOne.charAt(x));" What am I doing wrong here?

    import java.util.Scanner;
    import java.util.HashMap;

    public class test
    {
        static Scanner sc = new Scanner(System.in);
        static HashMap conversions = new HashMap();
        public static void main(String args[]){
            conversions.put('I',1);
            conversions.put('V',5);
            conversions.put('X',10);
            conversions.put('L',50);
            conversions.put('C',100);
            conversions.put('D',500);
            conversions.put('M',1000);

            String numOne = "XIX";

            for(int x = 0; x <= numOne.length()-2; x++){
                int temp1 = conversions.get(numOne.charAt(x));
                int temp2 = conversions.get(numOne.charAt(x+1));
            }
        }
    }

Answer 1

Change the line:

static HashMap conversions = new HashMap();

to

static Map<Character,Integer> conversions = new HashMap<Character,Integer>();

or as of Java 7, we can avoid some duplication by doing the following

static Map<Character,Integer> conversions = new HashMap<>();

All in all, this will autobox your primitives and resolve your problem