MySQLSyntaxErrorException (?) (2 replies)

Sorry if this is a standard problem. But I'm stumped.

I'm learning to program with the MySQL Connector for Java (5.1.36). While learning I stumbled upon a MySQLSyntaxError Exception. And, as beginner, I can't find the reason.

public void create(Project project) throws IllegalArgumentException, DAOException {
	if (project.getProjectId() != 0) {
		throw new IllegalArgumentException("Project is already created, the project ID is not null.");
	}

	Object[] values = { project.getProjectNumber(), project.getProjectName(), 
			project.getActivity(), project.getPerNumber(),
			toSqlDate(project.getDate()), project.getTime()}; 
		
	try (Connection connection = daoFactory.getConnection();
		PreparedStatement statement = prepareStatement(connection, 
			SQL_INSERT_PROJECT, true, values);) {
		int affectedRows = statement.executeUpdate();
		if (affectedRows == 0) {
			throw new DAOException("Creating user failed, no rows affected.");
		}
		try (ResultSet generatedKeys = statement.getGeneratedKeys()) {
			if (generatedKeys.next()) {
				project.setProjectId(generatedKeys.getLong(1));
			} else {
				throw new DAOException("Creating user failed, no generated key obtained.");
			}
		}
	} catch (SQLException e) {
		throw new DAOException(e);
	}
}

SQL_INSERT_PROJECT is

private static final String SQL_INSERT_PROJECT = 
	"INSERT INTO projects (projectnumber, project, activity, per_number, date, time " 
			+ "VALUES (?, ?, ?, ?, ?, ?)";

And finally, toSqlDate is

    public static Date toSqlDate(java.util.Date date) {
    	return (date != null) ? new Date(date.getTime()) : null;
    }

The error I got is:

class nl.pruttel.tk.dao.DAOException - DAOException constructor, com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; 
check the manual that corresponds to your MySQL server version for the right syntax to use near 
'VALUES ('p10001', 'TimeKeeper', 'DAOTest', '100101', '2015-08-05', '05:30:00')' at line 1
Exception in thread "main" java.lang.NullPointerException
	at nl.pruttel.tk.dao.DAOException.logState(DAOException.java:76)
	at nl.pruttel.tk.dao.DAOException.<init>(DAOException.java:51)
	at nl.pruttel.tk.dao.ProjectDAOImplementation.create(ProjectDAOImplementation.java:210)
	at nl.pruttel.tk.dao.DAOTest.main(DAOTest.java:68)