diff --git a/app/src/main/java/me/yifeiyuan/flapdev/components/DiffComponent.kt b/app/src/main/java/me/yifeiyuan/flapdev/components/DiffComponent.kt
index ed4117c7..11a2e86c 100644
--- a/app/src/main/java/me/yifeiyuan/flapdev/components/DiffComponent.kt
+++ b/app/src/main/java/me/yifeiyuan/flapdev/components/DiffComponent.kt
@@ -99,5 +99,4 @@ class DiffComponent(view: View) : Component<TestDiffModel>(view) {
             }
         }
     }
-
 }
\ No newline at end of file
diff --git a/flap/src/main/java/me/yifeiyuan/flap/differ/IDiffer.kt b/flap/src/main/java/me/yifeiyuan/flap/differ/IDiffer.kt
index 590ceb4d..fec36b15 100644
--- a/flap/src/main/java/me/yifeiyuan/flap/differ/IDiffer.kt
+++ b/flap/src/main/java/me/yifeiyuan/flap/differ/IDiffer.kt
@@ -24,20 +24,16 @@ interface IDiffer {
      *
      * @see androidx.recyclerview.widget.DiffUtil.ItemCallback.areItemsTheSame
      */
-    fun areItemsTheSame(newItem: Any): Boolean {
-        return this.javaClass == newItem.javaClass
-    }
+    fun areItemsTheSame(newItem: Any): Boolean
 
     /**
+     * 用于判断两个数据的内容是否相同
      *
-     * equals
      * 当 areItemsTheSame 返回 true 的时候会调用这个方法
      *
      * @see androidx.recyclerview.widget.DiffUtil.ItemCallback.areContentsTheSame
      */
-    fun areContentsTheSame(newItem: Any): Boolean {
-        return equals(newItem)
-    }
+    fun areContentsTheSame(newItem: Any): Boolean
 
     /**
      * 当 areItemsTheSame 返回 true , 并且 areContentsTheSame 返回 false, 就会调用该方法