diff --git a/java/build.xml b/java/build.xml
index 40d7d61..b98f7c3 100644
--- a/java/build.xml
+++ b/java/build.xml
@@ -13,6 +13,6 @@
 		</javac>
 	</target>
 	<target name="jar" depends="compile">
-		<jar jarfile="dist/msgpack-0.0.0.jar" basedir="build" />
+		<jar jarfile="dist/msgpack-0.0.1.jar" basedir="build" />
 	</target>
 </project>
diff --git a/java/src/org/msgpack/Packer.java b/java/src/org/msgpack/Packer.java
index ebd8402..935728d 100644
--- a/java/src/org/msgpack/Packer.java
+++ b/java/src/org/msgpack/Packer.java
@@ -20,7 +20,6 @@ package org.msgpack;
 import java.io.OutputStream;
 import java.io.IOException;
 import java.nio.ByteBuffer;
-import java.nio.charset.Charset;
 import java.util.List;
 import java.util.Map;