java - com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException. WHERE clause -

i mysql syntax error when running file aspirantes.java in netbeans:

com.mysql.jdbc.exceptions.jdbc4.mysqlsyntaxerrorexception: have error in sql syntax; check manual corresponds mysql server version right syntax use near 'telefono1 = '01 800 021 1000',telefono2 = '01 800 433 2000',carrera = 'it',promedio = '100',where ficha = 6' @ line 1

i can't figure out what's wrong. java code can seen (and downloaded) @ http://www.mediafire.com/view/?i37ccovyvcky8ai. error seems in lines 584 596, in mysql update sentence.

the "datos" table looks this:

any idea on how can solve this? thank in advance. cheers!

here's current code:

ssql = "update datos " +             "set apellido1 = ?," +             "apellido2 = ?," +             "nombre = ?," +             "genero = ?," +             "telefono1 = ?," +             "telefono2 = ?," +             "carrera = ?," +             "promedio = ?," +  // <<== remove trailing comma             "where ficha = " +id_actualizar; 

the problem have comma before where clause.