public void init() throws SQLException, ClassNotFoundException {
		Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
		Connection con = getConn();
		DatabaseMetaData meta = con.getMetaData();
		ResultSet res = meta.getTables(null, null, null, new String[] { "TABLE" });
		HashSet<String> tabName = new HashSet<String>();
		while (res.next()) {
			tabName.add(res.getString("TABLE_NAME"));
		}
		res.close();
		con.close();

		Database db = getDatabase();
		logger.info(tabName.toString());
		if (!tabName.contains("Task")) {

		}
		if (!tabName.contains("Result")) {

		}
	}