diff --git a/src/main/java/com/palnet/comn/collection/AuthCollection.java b/src/main/java/com/palnet/comn/collection/AuthCollection.java
index 7523b61..bea0eb9 100644
--- a/src/main/java/com/palnet/comn/collection/AuthCollection.java
+++ b/src/main/java/com/palnet/comn/collection/AuthCollection.java
@@ -25,12 +25,8 @@ public class AuthCollection {
 	public boolean checkAuthkey(String authKey) {
 		boolean result = false;
 
-		Iterator<String> iterator = authkeyList.iterator();
-
-		while(iterator.hasNext()){
-			String item = iterator.next();
-
-			if(authKey.equals(item)){
+		for (String item : authkeyList) {
+			if (authKey.equals(item)) {
 				result = true;
 				break;
 			}