diff --git a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/OutputStatementsGenerator.java b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/OutputStatementsGenerator.java
index 34a2054..5731930 100644
--- a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/OutputStatementsGenerator.java
+++ b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/OutputStatementsGenerator.java
@@ -1,5 +1,7 @@
 package org.ntlab.traceCollector.tracer;
 
+import java.io.UnsupportedEncodingException;
+import java.net.URLDecoder;
 import java.util.ArrayList;
 
 import javassist.CtBehavior;
@@ -263,9 +265,13 @@
 	}
 
 	public String generateInsertBeforeStatementsForClassDefinition(CtClass cc, CtConstructor classInitializer) throws NotFoundException {
-		String className = "\"" + cc.getName() + "\"";
-		String classPath = "\"" + cc.getURL().getPath() + "\"";
-		String loaderPath = "\"" + cc.getClassPool().getClassLoader().getResource("").getPath() + "\"";
-		return generator.generateInsertBeforeStatementsForClassDefinition(className, classPath, loaderPath);
+		try {
+			String className = "\"" + cc.getName() + "\"";
+			String classPath = "\"" + URLDecoder.decode(cc.getURL().getPath(), "UTF-8") + "\"";		// �p�X�� URL encode �ɂȂ��Ă��邽��
+			String loaderPath = "\"" + URLDecoder.decode(cc.getClassPool().getClassLoader().getResource("").getPath(), "UTF-8") + "\"";		// �p�X�� URL encode �ɂȂ��Ă��邽��
+			return generator.generateInsertBeforeStatementsForClassDefinition(className, classPath, loaderPath);
+		} catch (UnsupportedEncodingException e) {
+			return "";
+		}
 	}
 }