diff --git a/src/main/java/cit/PureATN/FileReadWriter.java b/src/main/java/cit/PureATN/FileReadWriter.java
new file mode 100644
index 0000000..6dd468d
--- /dev/null
+++ b/src/main/java/cit/PureATN/FileReadWriter.java
@@ -0,0 +1,192 @@
+package cit.PureATN;
+import java.io.BufferedInputStream;
+import java.io.BufferedReader;
+import java.io.ByteArrayOutputStream;
+import java.io.DataOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.util.ArrayList;
+
+public class FileReadWriter {
+
+	public static ArrayList<String> getLinesListFromResource(String path){
+		ClassLoader cl = FileReadWriter.class.getClassLoader();
+
+		if (cl == null) {
+			System.err.println("Resource not found: " + path);
+			return null;
+		} else {
+			InputStream ris = cl.getResourceAsStream(path);
+			return getLinesListFromInputStream(ris, path);
+		}
+	}
+	public static ArrayList<String> getLinesListFromInputStream(InputStream is, String name){
+		ArrayList<String> list = new ArrayList<String>();
+		try {
+			BufferedReader br = new BufferedReader(new InputStreamReader(is));
+			String line = null;
+			/* ファイル読み込み */
+			while ((line = br.readLine()) != null) {
+				list.add(line);
+			}
+			/* ファイルを閉じます */
+			br.close();
+		} catch (IOException err) {
+			System.out.println("ReadError: "+name);
+		}
+		return list;
+	}
+
+	public static ArrayList<String> getLinesList(String fn, boolean createIfNotExist){
+		File f = new File(fn);
+		if (createIfNotExist){
+			if (!f.exists()){
+				try {
+					if (f.createNewFile()){
+						System.out.println("New file "+fn+" Created.");
+					}
+				} catch (IOException e) {
+					e.printStackTrace();
+				}
+			}
+		}
+		return getLinesList(fn);
+	}
+
+	public static ArrayList<String> getLinesList(String fn){
+		try {
+			return getLinesListFromInputStream(new FileInputStream(fn), fn);
+		} catch (FileNotFoundException e) {
+			e.printStackTrace();
+		}
+		return null;
+	}
+	/* ファイルを読み込む */
+	public static String[] getLines(String fn) {
+
+		ArrayList<String> list = getLinesList(fn);
+		return (String[]) list.toArray(new String[list.size()]);
+	}
+
+	public static String[] getLinesFromResource(String path){
+		ArrayList<String> list = getLinesListFromResource(path);
+		return (String[]) list.toArray(new String[list.size()]);
+	}
+
+	/** 配列をファイルに書き込む 
+	 * 
+	 * @param fn ファイル名
+	 * @param data 文字列の配列（各行が要素）
+	 */
+	public static void putLines(String fn, String data[]) {
+		try {
+			FileWriter filewriter = new FileWriter(fn, false);
+			for (int i = 0; i < data.length; i++) {
+				/* 改行文字追加して */
+				/* 文字列を書き込みます */
+				filewriter.write(data[i]+System.getProperty("line.separator"));
+			}
+			/* ファイルを閉じます */
+			filewriter.close();
+		} catch (IOException e) {
+			System.out.println("WriteError:" + fn);
+		}
+	}
+	
+	/* ファイルに書き込む */
+	public static void putLines(String fn, ArrayList<String> data) {
+//		System.out.println(fn);
+		try {
+			FileWriter filewriter = new FileWriter(fn, false);
+			for (String d : data) {
+				/* 改行文字追加 */
+				d = d + "\r\n";
+				/* 文字列を書き込みます */
+				filewriter.write(d);
+			}
+			/* ファイルを閉じます */
+			filewriter.close();
+		} catch (IOException e) {
+			System.out.println("WriteError:" + fn);
+		}
+	}
+	
+	/* ファイルに書き込む */
+	public static void putStringToFile(String fn, String out) {
+//		System.out.println(fn);
+		try {
+			FileWriter filewriter = new FileWriter(fn, false);
+			filewriter.write(out);
+			/* ファイルを閉じます */
+			filewriter.close();
+		} catch (IOException e) {
+			System.out.println("WriteError:" + fn);
+		}
+	}
+
+	/* 文字列を分割して配列で返します */
+	public static String[] split(String delim, String text) {
+		int index = -1;
+		ArrayList<String> list = new ArrayList<String>();
+		while ((index = text.indexOf(delim)) != -1) {
+			list.add(text.substring(0, index));
+			text = text.substring(index + delim.length());
+		}
+		list.add(text);
+		String[] ret = (String[]) list.toArray(new String[list.size()]);
+		return ret;
+	}
+	
+	public static void writeBytesToFile(String filepath, byte[] ba){
+		OutputStream fos = null;
+		DataOutputStream dos = null;
+		try{
+			fos = new FileOutputStream(filepath);
+			dos = new DataOutputStream(fos);
+			dos.write(ba);
+			dos.close();
+			fos.close();
+		}catch(IOException iex){
+			iex.printStackTrace(System.out);
+		}
+	}
+	
+	public static byte[] readBytesFromFile(String path){
+		File f = new File(path);
+		if (!f.exists()) System.out.println("No file "+path);
+		
+		BufferedInputStream in;
+		ByteArrayOutputStream varyBuf = new ByteArrayOutputStream();
+		final int LS = 1024;
+		int b;
+		try {
+			in = new BufferedInputStream(new FileInputStream(path));
+			byte buf[] = new byte[LS];
+			while((b = in.read(buf, 0, buf.length)) != -1 ) {
+				varyBuf.write(buf,0,b) ;
+			}
+			varyBuf.close();
+			in.close();
+		} catch (FileNotFoundException e) {
+			e.printStackTrace();
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+		return varyBuf.toByteArray();
+	}
+	public static ArrayList<String> buffer;
+	public static void bufclear() {
+		if (buffer == null) buffer = new ArrayList<String>();
+		else buffer.clear();
+	}
+	public static void bufSave(String fn){
+		FileReadWriter.putLines(fn, buffer);
+	}
+}