feat: "second commit"

src/main/java/com/szwl/exception/MyException.java

@@ -0,0 +1,13 @@
+package com.szwl.exception;
+
+import lombok.Data;
+
+@Data
+public class MyException extends RuntimeException {
+    private static final long serialVersionUID = -2565431806475335331L;
+    String message;
+
+    public MyException(String message) {
+        this.message = message;
+    }
+}