diff --git a/TracerOnJavassist/src/tracer/Tracer.java b/TracerOnJavassist/src/tracer/Tracer.java
index a7fa5d9..3e468b3 100644
--- a/TracerOnJavassist/src/tracer/Tracer.java
+++ b/TracerOnJavassist/src/tracer/Tracer.java
@@ -37,11 +37,19 @@
 	private static final String EXCEPT_FOR_METHODS = "java.lang.Thread.currentThread..|java.lang.Thread.getId..";
 	private static final String STANDARD_LIB = "java.";
 	private static OutputStatementsGenerator outputStatementsGenerator = null;
-	private static CodeConverter conv = new CodeConverter();
+	private static ClassPool cp = null;
+	private static CodeConverter conv = null;
 
 	public static void main(String[] args) {
 		initialize(new OutputStatementsGenerator(new JSONTraceGenerator()));		// �����ŏo�̓t�H�[�}�b�g���w�肷��		
-		packageInstrumentation("worstCase");										// �w�肵���p�b�P�[�W�����̑S�N���X�ɃC���X�g�D�������e�[�V�������s��
+		ClassLoader loader = Thread.currentThread().getContextClassLoader();
+		URL resource = loader.getResource("");
+		try {
+			String classPath = URLDecoder.decode(resource.getPath(), "UTF-8");
+			packageInstrumentation("_arraySample.", classPath);							// �w�肵���p�b�P�[�W���̑S�N���X�ɃC���X�g�D�������e�[�V�������s��
+		} catch (UnsupportedEncodingException e) {
+			e.printStackTrace();
+		} 
 	}
 
 	/**
@@ -50,14 +58,23 @@
 	 * @param outputStatementsGenerator �o�͕�������(�o�̓t�H�[�}�b�g���w��ł���)
 	 */
 	public static void initialize(OutputStatementsGenerator outputStatementsGenerator) {
-		// �z��ւ̃A�N�Z�X�̌��o
+		initialize(outputStatementsGenerator, ClassPool.getDefault());
+	}
+
+	/**
+	 * �o�͕���������w�肵�ăC���X�g�D�������e�[�V�����̏��������s��
+	 * 
+	 * @param outputStatementsGenerator �o�͕�������(�o�̓t�H�[�}�b�g���w��ł���)
+	 * @param cp Javassist�̃N���X�v�[��
+	 */
+	public static void initialize(OutputStatementsGenerator outputStatementsGenerator, ClassPool cp) {
+		// �z��ւ̃A�N�Z�X�̌��o]
+		Tracer.cp = cp;
 		Tracer.outputStatementsGenerator = outputStatementsGenerator;	// �����ŏo�̓t�H�[�}�b�g���w�肷��
+		Tracer.conv = new CodeConverter();
 		if (!(Tracer.outputStatementsGenerator.getGenerator() instanceof PlainTextTraceGenerator)) {
-			// 
-			ClassPool cp = ClassPool.getDefault();
-			CtClass cc;
 			try {
-				cc = cp.get(TRACER + "JSONArrayAdvisor");			// JSON�̏ꍇ�̂ݔz��A�N�Z�X���o�͂���
+				CtClass cc = cp.get(TRACER + "JSONArrayAdvisor");		// JSON�̏ꍇ�̂ݔz��A�N�Z�X���o�͂���
 				conv.replaceArrayAccess(cc, new CodeConverter.DefaultArrayAccessReplacementMethodNames());
 			} catch (NotFoundException e1) {
 				e1.printStackTrace();
@@ -70,28 +87,25 @@
 	 * @return �������ς�: true, ����ȊO: false
 	 */
 	public static boolean isInitialized() {
-		return (outputStatementsGenerator != null);
+		return (outputStatementsGenerator != null) && (cp != null) && (conv != null);
 	}
 
 	/**
 	 * �w�肵���p�b�P�[�W���̃N���X�ɃC���X�g�D�������e�[�V�������s��
 	 * 
 	 * @param packageName �p�b�P�[�W��
+	 * @param classPath �o�͂���N���X�t�@�C���̃N���X�p�X(null �̏ꍇ�͏o�͂��Ȃ�)
 	 */
-	public static void packageInstrumentation(String packageName) {
-		ClassLoader loader = Thread.currentThread().getContextClassLoader();
-		URL resource = loader.getResource(packageName);
+	public static void packageInstrumentation(String packageName, String classPath) {
 		File dir;
-		try {
-			dir = new File(URLDecoder.decode(resource.getPath(), "UTF-8"));
-			for (String file : dir.list()) {
-				if (file.endsWith(".class")) {
-					String className = packageName + "." + file.replace(".class", "");
-					classInstrumentation(className);
-				}
+		dir = new File(classPath + packageName.replace(".", "/"));
+		for (File file : dir.listFiles()) {
+			if (file.isFile() && file.getName().endsWith(".class")) {
+				String className = packageName + file.getName().replace(".class", "");
+				classInstrumentation(className, classPath);
+			} else if (file.isDirectory()) {
+				packageInstrumentation(packageName + file.getName() + ".", classPath);
 			}
-		} catch (UnsupportedEncodingException e) {
-			e.printStackTrace();
 		}
 	}
 
@@ -99,13 +113,12 @@
 	 * �w�肵���N���X�ɃC���X�g�D�������e�[�V�������s��
 	 * 
 	 * @param className �N���X��
+	 * @param classPath �o�͂���N���X�t�@�C���̃N���X�p�X(null �̏ꍇ�͏o�͂��Ȃ�)
 	 */
-	public static void classInstrumentation(String className) {
-		ClassPool cp = ClassPool.getDefault();
-		CtClass cc;
+	public static void classInstrumentation(String className, String classPath) {
 		try {
-			cc = cp.get(className);
-			classInstrumentation(cc);
+			CtClass cc = cp.get(className);
+			classInstrumentation(cc, classPath);
 		} catch (NotFoundException | BadBytecode | CannotCompileException | IOException e) {
 			e.printStackTrace();
 		}
@@ -115,8 +128,9 @@
 	 * �w�肵���N���X�ɃC���X�g�D�������e�[�V�������s��
 	 * 
 	 * @param cc Javassist�̃N���X�I�u�W�F�N�g
+	 * @param classPath �o�͂���N���X�t�@�C���̃N���X�p�X(null �̏ꍇ�͏o�͂��Ȃ�)
 	 */
-	public static void classInstrumentation(CtClass cc) throws BadBytecode, NotFoundException, CannotCompileException, IOException {
+	public static void classInstrumentation(CtClass cc, String classPath) throws BadBytecode, NotFoundException, CannotCompileException, IOException {
 		classInitializerInstrumentation(cc, cc.getClassInitializer());
 		
 		for (final CtConstructor c : cc.getDeclaredConstructors()) {
@@ -126,7 +140,7 @@
 			methodInstrumentation(cc, m);
 		}
 		cc.instrument(conv);
-		cc.writeFile("bin");
+		if (classPath != null) cc.writeFile(classPath);
 	}
 	
 	private static void classInitializerInstrumentation(CtClass cc, CtConstructor classInitializer) throws BadBytecode, NotFoundException, CannotCompileException {