diff --git a/src/org/redkale/util/ObjectPool.java b/src/org/redkale/util/ObjectPool.java
index 12849f857..486f37c7c 100644
--- a/src/org/redkale/util/ObjectPool.java
+++ b/src/org/redkale/util/ObjectPool.java
@@ -11,6 +11,7 @@ import java.util.function.*;
 import java.util.logging.*;
 
 /**
+ * 对象池
  *
  * <p>
  * 详情见: https://redkale.org
diff --git a/src/org/redkale/util/Reproduce.java b/src/org/redkale/util/Reproduce.java
index 596810c75..128b4b027 100644
--- a/src/org/redkale/util/Reproduce.java
+++ b/src/org/redkale/util/Reproduce.java
@@ -7,6 +7,8 @@ import jdk.internal.org.objectweb.asm.*;
 import static jdk.internal.org.objectweb.asm.ClassWriter.COMPUTE_FRAMES;
 
 /**
+ * JavaBean类对象的拷贝，相同的字段名会被拷贝 <br>
+ * <b>注意</b>: 拷贝类与被拷贝类的字段可见模式必须一致， 要么都是public field, 要么都是getter、setter模式。 <br>
  *
  * <p>
  * 详情见: https://redkale.org
@@ -15,7 +17,7 @@ import static jdk.internal.org.objectweb.asm.ClassWriter.COMPUTE_FRAMES;
  * @param <D> 目标对象的数据类型
  * @param <S> 源对象的数据类型
  */
-public interface Reproduce<D, S> extends BiFunction<D, S, D>{
+public interface Reproduce<D, S> extends BiFunction<D, S, D> {
 
     @Override
     public D apply(D dest, S src);