new file mode 100644
--- /dev/null
+++ b/src/main/java/nl/cwi/monetdb/util/Extract.java
@@ -0,0 +1,67 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0.  If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * Copyright 1997 - July 2008 CWI, August 2008 - 2016 MonetDB B.V.
+ */
+
+package nl.cwi.monetdb.util;
+
+import java.io.BufferedReader;
+import java.io.FileNotFoundException;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+
+
+/**
+ * This file contains a function to extract files from its including Jar
+ * package.
+ *
+ * @author Ying Zhang <Y.Zhang@cwi.nl>
+ * @version 0.1
+ */
+
+public class Extract {
+	private static final int DEFAULT_BUFSIZE = 16386;
+
+    public Extract() {}
+
+    /**
+     * Extracts a file from the Jar package which includes this class to
+     * the given destination
+     * @param fromFile The file to extract, including it absolute path
+     * inside its including Jar package.
+     * @param toFile Destination for the extracted file
+     * @throws FileNotFoundException If the file to extract can not be
+     * found in its including Jar package.
+     * @throws IOException If any error happens during
+     * creating/reading/writing files.
+     */
+	public static void extractFile(String fromFile, String toFile)
+		throws FileNotFoundException, IOException
+	{
+		char[] cbuf = new char[DEFAULT_BUFSIZE];
+		int ret = 0;
+
+		InputStream is = new Extract().getClass().getResourceAsStream(fromFile);
+
+		if(is == null) {
+			throw new FileNotFoundException("File " + fromFile +
+					" does not exist in the JAR package.");
+		}
+
+		BufferedReader reader = new BufferedReader(new InputStreamReader(is));
+		FileWriter writer = new FileWriter(toFile, false);
+
+		ret = reader.read(cbuf, 0, DEFAULT_BUFSIZE);
+		while(ret > 0){
+			writer.write(cbuf, 0, ret);
+			ret = reader.read(cbuf, 0, DEFAULT_BUFSIZE);
+		}
+		reader.close();
+		writer.close();
+	}
+}