diff --git a/java/src/Encryypt.java b/java/src/Encryypt.java
index 6da21c8..444f822 100644
--- a/java/src/Encryypt.java
+++ b/java/src/Encryypt.java
@@ -127,6 +127,11 @@ public class Encryypt {
         return byteData;
     }
 
+    /**
+     * 메인함수
+     * @param args
+     * @throws Exception
+     */
     public static void main(String[] args) throws Exception {
         byte[] key = generateKey("AES", 128);
         String hexKey = byteArrayToHex(key); //generateKey의 16진수 문자열로 변환