--- a/src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/core/App.java	Tue Aug 26 07:41:35 2014 +0900
+++ b/src/main/java/jp/ac/u_ryukyu/ie/cr/shoshi/jungle/core/App.java	Wed Aug 27 05:07:50 2014 +0900
@@ -1,11 +1,13 @@
 package jp.ac.u_ryukyu.ie.cr.shoshi.jungle.core;
 
 import java.nio.ByteBuffer;
+
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.DefaultJungle;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.JungleTree;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.JungleTreeEditor;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.DefaultNodePath;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.DefaultTreeEditor;
+import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.TreeNode;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.traverser.DefaultTraverser;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;
@@ -16,7 +18,7 @@
  */
 public class App 
 {
-    public static void main( String[] args )
+    public static <T extends TreeNode<T>>void main( String[] args )
     {
     	DefaultJungle jungle = new DefaultJungle(null,"sample",new DefaultTreeEditor(new DefaultTraverser()));
     	jungle.createNewTree("hoge");
@@ -32,7 +34,7 @@
     	e.success();
     	
     	
-    	Node root = tree.getRootNode();
+    	TreeNode<T> root = tree.getRootNode();
     	ByteBuffer v = root.getAttributes().get(key);
     	String str = new String(v.array());
     	System.out.println(str);