While loop in a Hash Map

Question

My while loop doesnt seem to work in a hash map, it works fine when I loop an array list.
It compiles but it doesnt seem to find any employees, should I use another loop?
{code
public Employee find(String id)
Employee foundEmployee = null;
int index = 0;
boolean found = false;
while(index < register.size() && !found){
Employee right = register.get(index);
String namn = right.getName();
if (namn.equals(id)){
foundEmployee = right;
found = true;
index++;
return foundEmployee;