I'm aware that this must be a stupid question, but after googling for a while can't find the right answer: How can I invoke a method with a boolean as an argument. I try to do the following: ---8<--- (let* ((jlclass (jclass "java.lang.Class")) (for-name (jmethod jlclass "forName" (jclass "java.lang.String") (jclass "boolean") (jclass "java.lang.ClassLoader")))) (jstatic for-name jlclass "org.postgresql.Driver" t (get-current-classloader))) ---8<--- But it raises the error: The value T is not of class boolean [Condition of type ERROR] I tried replacing '(jclass "boolean") for '(jclass "java.lang.Boolean"), but in that case it doesn't find the for-name method. How am I supposed to invoke the method! Thanks in advance! -- +----------------- | Francisco Vides Fernández <fvides@dedaloingenieros.com> | Gerente | Teléfono fijo: 952 60 29 59 | Fax: 952 60 29 59 | igaleno http://www.igaleno.com/ +------