Java Map<String,String> 데이터 풀기

Iterator 이용

Iterator<String> keys = data.keySet().iterator();
while(keys.hasNext()){
    String key = keys.next();
    System.out.println("key : " + key + "," + " value : " + data.get(key));
}

ForEach(향상된 for문) 이용

for( String key : data.keySet()) {
    System.out.println("key : " + key + "," + " value : " + data.get(key));
}