example of hashmap for byte[] keys

/**
 * Created by pakkio on 01/02/2016.
 */
public class Main {
    static HashMap<Object,Object>map=new HashMap<Object, Object>();
    public static void main(String[] args) {

        byte[] b1=new byte[]{ 1,2,3};
        byte[] b2=new byte[]{ 1,2,3};



        insert(b1,"value1");
        remove(b1);

        insert(b1,"value2");
        remove(b2);


        System.out.println(map.size()+ " should be 0");
    }

    private static void remove(Object input) {
        map.remove(convert(input));
    }

    private static void insert(Object input, Object value) {
        map.put(convert(input),value);
    }

    private static Object convert(Object input){
        //if(true) return input;
        if(input instanceof byte[]){
            return new String((byte[])input);
        }
        return input;
    }
}