JDBC——释放资源的代码

public static void release(ResultSet rs, Statement statement,
			Connection conn) {
		if (rs != null) {
			try {
				rs.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
		if (statement != null) {
			try {
				statement.close();
			} catch (Exception e2) {
				e2.printStackTrace();
			}
		}
		if (conn != null) {
			try {
				conn.close();
			} catch (Exception e2) {
				e2.printStackTrace();
			}
		}

	}