diff --git a/maker/java/src/main/java/org/lionsoul/ip2region/xdb/Maker.java b/maker/java/src/main/java/org/lionsoul/ip2region/xdb/Maker.java
index 5156e9c..3a11952 100644
--- a/maker/java/src/main/java/org/lionsoul/ip2region/xdb/Maker.java
+++ b/maker/java/src/main/java/org/lionsoul/ip2region/xdb/Maker.java
@@ -51,7 +51,6 @@
 
 package org.lionsoul.ip2region.xdb;
 
-import javax.xml.crypto.Data;
 import java.io.*;
 import java.nio.charset.Charset;
 import java.util.HashMap;