diff --git a/binding/java/build.xml b/binding/java/build.xml
index 391311c..2ac3638 100644
--- a/binding/java/build.xml
+++ b/binding/java/build.xml
@@ -9,7 +9,7 @@
 		<property name="jars" value="${basedir}"/>
 		<property name="sources" value="${basedir}/src"/>
 		<property name="classes" value="${basedir}/classes"/>
-		<property name="version" value="1.0"/>
+		<property name="version" value="1.2"/>
 		<property name="api" value="${basedir}/doc"/>
 		<mkdir dir="${classes}"/>
 		<mkdir dir="${api}"/>
diff --git a/binding/java/src/org/lionsoul/ip2region/DataBlock.java b/binding/java/src/org/lionsoul/ip2region/DataBlock.java
index 9afd7be..cf53e36 100644
--- a/binding/java/src/org/lionsoul/ip2region/DataBlock.java
+++ b/binding/java/src/org/lionsoul/ip2region/DataBlock.java
@@ -3,54 +3,84 @@ package org.lionsoul.ip2region;
 /**
  * data block class
  * 
- * @author    chenxin<chenxin619315@gmail.com>
+ * @author	chenxin<chenxin619315@gmail.com>
 */
 public class DataBlock 
 {
-    /**
-     * city id 
-    */
-    private int city_id;
-    
-    /**
-     * region address
-    */
-    private String region;
-    
-    public DataBlock( int city_id, String region )
-    {
-        this.city_id = city_id;
-        this.region = region;
-    }
+	/**
+	 * city id 
+	*/
+	private int city_id;
+	
+	/**
+	 * region address
+	*/
+	private String region;
+	
+	/**
+	 * region ptr in the db file
+	*/
+	private int dataPtr;
+	
+	/**
+	 * construct method
+	 * 
+	 * @param  city_id
+	 * @param  region  region string
+	 * @param  ptr data ptr
+	*/
+	public DataBlock( int city_id, String region, int dataPtr )
+	{
+		this.city_id = city_id;
+		this.region  = region;
+		this.dataPtr = dataPtr;
+	}
+	
+	public DataBlock(int city_id, String region)
+	{
+	    this(city_id, region, 0);
+	}
 
-    public int getCityId()
-    {
-        return city_id;
-    }
+	public int getCityId()
+	{
+		return city_id;
+	}
 
-    public DataBlock setCityId(int city_id)
-    {
-        this.city_id = city_id;
-        return this;
-    }
+	public DataBlock setCityId(int city_id)
+	{
+		this.city_id = city_id;
+		return this;
+	}
 
-    public String getRegion()
-    {
-        return region;
-    }
+	public String getRegion()
+	{
+		return region;
+	}
+
+	public DataBlock setRegion(String region)
+	{
+		this.region = region;
+		return this;
+	}
+	
+	public int getDataPtr()
+	{
+	    return dataPtr;
+	}
+	
+	public DataBlock setDataPtr(int dataPtr)
+	{
+	    this.dataPtr = dataPtr;
+	    return this;
+	}
+	
+	@Override
+	public String toString()
+	{
+		StringBuilder sb = new StringBuilder();
+		
+		sb.append(city_id).append('|').append(region).append('|').append(dataPtr);
+		return sb.toString();
+	}
 
-    public DataBlock setRegion(String region)
-    {
-        this.region = region;
-        return this;
-    }
-    
-    @Override
-    public String toString()
-    {
-        StringBuilder sb = new StringBuilder();
-        
-        sb.append(city_id).append('|').append(region);
-        return sb.toString();
-    }
 }
diff --git a/binding/java/src/org/lionsoul/ip2region/DbSearcher.java b/binding/java/src/org/lionsoul/ip2region/DbSearcher.java
index 488842f..dace1df 100644
--- a/binding/java/src/org/lionsoul/ip2region/DbSearcher.java
+++ b/binding/java/src/org/lionsoul/ip2region/DbSearcher.java
@@ -76,7 +76,7 @@ public class DbSearcher
         int city_id = (int)Util.getIntLong(data, 0);
         String region = new String(data, 4, data.length - 4, "UTF-8");
         
-        return new DataBlock(city_id, region);
+        return new DataBlock(city_id, region, dataPtr);
     }
     
     /**
@@ -204,7 +204,7 @@ public class DbSearcher
         int city_id = (int)Util.getIntLong(data, 0);
         String region = new String(data, 4, data.length - 4, "UTF-8");
         
-        return new DataBlock(city_id, region);
+        return new DataBlock(city_id, region, dataPtr);
     }
     
     /**
@@ -274,7 +274,7 @@ public class DbSearcher
         int city_id = (int)Util.getIntLong(data, 0);
         String region = new String(data, 4, data.length - 4, "UTF-8");
         
-        return new DataBlock(city_id, region);
+        return new DataBlock(city_id, region, dataPtr);
     }
     
     /**