Map map = new HashMap(); map.put("key1", "value1"); map.put("key2", "value2"); map.put("key3", "value3"); λ°©λ² 1. Iterator λ°©μ Iterator iter = map.keySet().iterator(); while(iter.hasNext()) { String key = iter.next(); System.out.println( "key: " + key + " value: " + map.get(key)); } λ°©λ² 2. EntrySet λ°©μ for( Map.Entry entry : map.entrySet()) { System.out.println( "key: " + entry.getKey() + " value: " ..