diff --git a/pattern-flyweight/src/main/java/org/panda/flyweight/BigCharFactory.java b/pattern-flyweight/src/main/java/org/panda/flyweight/BigCharFactory.java
index f21bf8c..4503713 100644
--- a/pattern-flyweight/src/main/java/org/panda/flyweight/BigCharFactory.java
+++ b/pattern-flyweight/src/main/java/org/panda/flyweight/BigCharFactory.java
@@ -9,11 +9,12 @@ import java.util.HashMap;
 public class BigCharFactory {
 
     private HashMap pool = new HashMap();
-
+    /**
+     * 字节工厂-单例
+     */
     private static BigCharFactory singleton = new BigCharFactory();
 
     private BigCharFactory(){
-
     }
 
     public static BigCharFactory getInstance(){