diff --git a/src/org/redkale/convert/Factory.java b/src/org/redkale/convert/Factory.java
index b38231a9a..4c500b59c 100644
--- a/src/org/redkale/convert/Factory.java
+++ b/src/org/redkale/convert/Factory.java
@@ -37,13 +37,13 @@ public abstract class Factory<R extends Reader, W extends Writer> {
     private final Encodeable<W, ?> anyEncoder = new AnyEncoder(this);
 
     //-----------------------------------------------------------------------------------
-    private final HashedMap<Class, Creator> creators = new HashedMap();
+    private final ConcurrentHashMap<Class, Creator> creators = new ConcurrentHashMap();
 
-    private final Map<String, Class> entitys = new ConcurrentHashMap();
+    private final ConcurrentHashMap<String, Class> entitys = new ConcurrentHashMap();
 
-    private final HashedMap<Type, Decodeable<R, ?>> decoders = new HashedMap();
+    private final ConcurrentHashMap<Type, Decodeable<R, ?>> decoders = new ConcurrentHashMap();
 
-    private final HashedMap<Type, Encodeable<W, ?>> encoders = new HashedMap();
+    private final ConcurrentHashMap<Type, Encodeable<W, ?>> encoders = new ConcurrentHashMap();
 
     private final HashMap<AccessibleObject, ConvertColumnEntry> columnEntrys = new HashMap();
 
diff --git a/src/org/redkale/convert/HashedMap.java b/src/org/redkale/convert/HashedMap.java
deleted file mode 100644
index a0f8db5a9..000000000
--- a/src/org/redkale/convert/HashedMap.java
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * To change this template, choose Tools | Templates
- * and open the template in the editor.
- */
-package org.redkale.convert;
-
-import java.lang.reflect.*;
-
-/**
- * 只增不减的伪Map类
- *
- * @see http://www.redkale.org
- * @author zhangjx
- * @param <K>
- * @param <V>
- */
-@SuppressWarnings("unchecked")
-public final class HashedMap<K extends Type, V> {
-
-    protected final transient Entry<K, V>[] table;
-
-    public HashedMap() {
-        this(128);
-    }
-
-    public HashedMap(int initCapacity) {
-        this.table = new Entry[Math.max(initCapacity, 16)];
-    }
-
-    public final V get(final K key) {
-        final K k = key;
-        final Entry<K, V>[] data = this.table;
-        Entry<K, V> entry = data[k.hashCode() & (data.length - 1)];
-        while (entry != null) {
-            if (k == entry.key) return entry.value;
-            entry = entry.next;
-        }
-        return null;
-    }
-
-    public final V put(K key, V value) {
-        final K k = key;
-        final Entry<K, V>[] data = this.table;
-        final int index = k.hashCode() & (data.length - 1);
-        Entry<K, V> entry = data[index];
-        while (entry != null) {
-            if (k == entry.key) {
-                V old = entry.value;
-                entry.value = value;
-                return old;
-            }
-            entry = entry.next;
-        }
-        data[index] = new Entry(key, value, data[index]);
-        return null;
-    }
-
-    protected static final class Entry<K, V> {
-
-        protected V value;
-
-        protected final K key;
-
-        protected final Entry<K, V> next;
-
-        protected Entry(K key, V value, Entry<K, V> next) {
-            this.key = key;
-            this.value = value;
-            this.next = next;
-        }
-    }
-}