Java TEST database connection

This is a test question post - please do not answer

public int addCourse (Course course) throws SQLException
{
    query = "INSERT INTO course (title) VALUES (?);";
    ps = DBase.getInstance().getConnection().prepareStatement(query, 1);
    ps.setString(1, course.title);
    ps.execute();
    rs = ps.getGeneratedKeys();
    if (!rs.next())
        return -1;
    return course.course_id = rs.getInt(1);
}