diff --git a/ngbatis-demo/src/main/java/ye/weicheng/ngbatis/demo/pojo/vertex/Player.java b/ngbatis-demo/src/main/java/ye/weicheng/ngbatis/demo/pojo/vertex/Player.java
index a153b4e..8086ea0 100644
--- a/ngbatis-demo/src/main/java/ye/weicheng/ngbatis/demo/pojo/vertex/Player.java
+++ b/ngbatis-demo/src/main/java/ye/weicheng/ngbatis/demo/pojo/vertex/Player.java
@@ -52,11 +52,11 @@ public void setAge(Integer age) {
 
   @Override
   public String toString() {
-    return "Player{" +
-            "id='" + id + '\'' +
-            ", name='" + name + '\'' +
-            ", age=" + age +
-            '}';
+    return "Player{"
+            + "id='" + id + '\''
+            + ", name='" + name + '\''
+            + ", age=" + age
+            + '}';
   }
 
 }