为了有HSQLDB注册本身，您需要访问其jdbcDriver类。您可以按照示例中的相同方式执行此操作。

In order to have HSQLDB register itself, you need to access its jdbcDriver class. You can do this the same way as in this example.

Class.forName("org.hsqldb.jdbcDriver");

它触发jdbcDriver类的静态初始化，它是：

It triggers static initialization of jdbcDriver class, which is:

static {
    try {
        DriverManager.registerDriver(new jdbcDriver());
    } catch (Exception e) {}
}