hashMap.keySet().toArray(); // returns an array of keys
hashMap.values().toArray(); // returns an array of values
hashMap.keySet().toArray(); // returns an array of keys
hashMap.values().toArray(); // returns an array of values
Edit
Edit
ShouldIt should be noted that the ordering of both arrays may not be the same, See oxbow_lakes answer for a better approach for iteration when the pair key/values are needed.