diff --git a/programmers/문자열 다루기 기본/solution.java b/programmers/문자열 다루기 기본/solution.java
new file mode 100644
index 0000000..d6a7c53
--- /dev/null
+++ b/programmers/문자열 다루기 기본/solution.java	
@@ -0,0 +1,13 @@
+// [문제 링크]: https://school.programmers.co.kr/learn/courses/30/lessons/12918
+
+class Solution {
+    public boolean solution(String s) {
+        boolean ss = true;
+        try{
+            Integer.parseInt(s);
+        }catch(Exception e){
+            ss = false;
+        }
+        return ((s.length() == 4 || s.length() == 6) && ss);
+    }
+}
\ No newline at end of file