Question

I have a LinkedHashMap in my code:

 protected LinkedHashMap<String, String> profileMap;

I want to print all the keys present in profileMap. How can do this using an Iterator or a loop?

Answer 1

You should iterate over the Set from Map.keySet:

for (final String key : profileMap.keySet()) {
  /* print the key */
}

Using an Iterator explicitly,

final Iterator<String> cursor = profileMap.keySet().iterator();
while (cursor.hasNext()) {
  final String key = cursor.next();
  /* print the key */
}

Both are more or less identical when compiled, however.