diff --git a/src/com/wentch/redkale/convert/bson/BsonReader.java b/src/com/wentch/redkale/convert/bson/BsonReader.java
index e94917d93..749fd139d 100644
--- a/src/com/wentch/redkale/convert/bson/BsonReader.java
+++ b/src/com/wentch/redkale/convert/bson/BsonReader.java
@@ -9,6 +9,7 @@ import com.wentch.redkale.convert.*;
 import com.wentch.redkale.convert.ext.*;
 import com.wentch.redkale.util.*;
 import java.util.concurrent.atomic.*;
+import java.util.function.*;
 
 /**
  *
@@ -38,7 +39,19 @@ public final class BsonReader implements Reader {
     }
 
     public static ObjectPool<BsonReader> createPool(int max) {
-        return new ObjectPool<>(max, (Object... params) -> new BsonReader(), null, (x) -> x.recycle());
+        return new ObjectPool<BsonReader>(max, new Creator<BsonReader>() {
+
+            @Override
+            public BsonReader create(Object... params) {
+                return new BsonReader();
+            }
+        }, null, new Predicate<BsonReader>() {
+
+            @Override
+            public boolean test(BsonReader t) {
+                return t.recycle();
+            }
+        });
     }
 
     public BsonReader(byte[] bytes) {
diff --git a/src/com/wentch/redkale/convert/bson/BsonWriter.java b/src/com/wentch/redkale/convert/bson/BsonWriter.java
index 52b9081d6..d4c06220c 100644
--- a/src/com/wentch/redkale/convert/bson/BsonWriter.java
+++ b/src/com/wentch/redkale/convert/bson/BsonWriter.java
@@ -8,6 +8,7 @@ package com.wentch.redkale.convert.bson;
 import com.wentch.redkale.convert.*;
 import com.wentch.redkale.util.*;
 import java.nio.*;
+import java.util.function.*;
 
 /**
  *
@@ -24,7 +25,19 @@ public class BsonWriter implements Writer {
     protected boolean tiny;
 
     public static ObjectPool<BsonWriter> createPool(int max) {
-        return new ObjectPool<>(max, (Object... params) -> new BsonWriter(), null, (x) -> x.recycle());
+        return new ObjectPool<BsonWriter>(max, new Creator<BsonWriter>() {
+
+            @Override
+            public BsonWriter create(Object... params) {
+                return new BsonWriter();
+            }
+        }, null, new Predicate<BsonWriter>() {
+
+            @Override
+            public boolean test(BsonWriter t) {
+                return t.recycle();
+            }
+        });
     }
 
     public byte[] toArray() {
@@ -66,7 +79,7 @@ public class BsonWriter implements Writer {
      * 扩充指定长度的缓冲区
      *
      * @param len
-     * @return 
+     * @return
      */
     protected int expand(int len) {
         int newcount = count + len;
diff --git a/src/com/wentch/redkale/convert/json/JsonReader.java b/src/com/wentch/redkale/convert/json/JsonReader.java
index 374c97148..407f50e12 100644
--- a/src/com/wentch/redkale/convert/json/JsonReader.java
+++ b/src/com/wentch/redkale/convert/json/JsonReader.java
@@ -8,6 +8,7 @@ package com.wentch.redkale.convert.json;
 import com.wentch.redkale.convert.*;
 import com.wentch.redkale.util.*;
 import java.util.concurrent.atomic.*;
+import java.util.function.*;
 
 /**
  *
@@ -22,7 +23,19 @@ public final class JsonReader implements Reader {
     private int limit;
 
     public static ObjectPool<JsonReader> createPool(int max) {
-        return new ObjectPool<>(max, (Object... params) -> new JsonReader(), null, (x) -> x.recycle());
+        return new ObjectPool<JsonReader>(max, new Creator<JsonReader>() {  //为了兼容 JDK 6
+
+            @Override
+            public JsonReader create(Object... params) {
+                return new JsonReader();
+            }
+        }, null, new Predicate<JsonReader>() {
+
+            @Override
+            public boolean test(JsonReader t) {
+                return t.recycle();
+            }
+        });
     }
 
     public JsonReader() {
diff --git a/src/com/wentch/redkale/convert/json/JsonWriter.java b/src/com/wentch/redkale/convert/json/JsonWriter.java
index c62e32120..8c08296e9 100644
--- a/src/com/wentch/redkale/convert/json/JsonWriter.java
+++ b/src/com/wentch/redkale/convert/json/JsonWriter.java
@@ -8,6 +8,7 @@ package com.wentch.redkale.convert.json;
 import com.wentch.redkale.convert.*;
 import com.wentch.redkale.util.*;
 import java.nio.*;
+import java.util.function.*;
 
 /**
  *
@@ -30,7 +31,19 @@ public class JsonWriter implements Writer {
     protected boolean tiny;
 
     public static ObjectPool<JsonWriter> createPool(int max) {
-        return new ObjectPool<>(max, (Object... params) -> new JsonWriter(), null, (x) -> x.recycle());
+        return new ObjectPool<JsonWriter>(max, new Creator<JsonWriter>() {
+
+            @Override
+            public JsonWriter create(Object... params) {
+                return new JsonWriter();
+            }
+        }, null, new Predicate<JsonWriter>() {
+
+            @Override
+            public boolean test(JsonWriter t) {
+                return t.recycle();
+            }
+        });
     }
 
     public JsonWriter() {