--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main/java/jp/ac/u_ryukyu/ie/cr/jungle/persistent/DefaultJournalWriter.java	Wed Nov 30 01:47:55 2016 +0900
@@ -0,0 +1,31 @@
+package jp.ac.u_ryukyu.ie.cr.jungle.persistent;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.RandomAccessFile;
+
+import jp.ac.u_ryukyu.ie.cr.jungle.util.Either;
+
+public class DefaultJournalWriter
+{
+	public DefaultJournalWriter(String _fileName)
+	{
+		
+	}
+	
+	public static Either<Error,DefaultJournalWriter> newInstance(String fileName)
+	{
+		RandomAccessFile journal = null;
+		try{
+			journal = new RandomAccessFile(fileName,"rw");
+			//FileChannel ch = journal.getChannel();
+			long length = journal.length();
+		}catch(FileNotFoundException e){
+			
+		}catch(IOException e){
+			
+		}
+		
+		return null;
+	}
+}