Appearing in the Spring 2013 issue of One College Avenue magazine: Unsure two years ago whether he would teach again, John J. Messer, assistant professor of computer science, resolved to return to the classroom during treatment for brain tumors.Appearing in the Spring 2013 issue of One College Avenue magazine: Unsure two years ago whether he would teach again, John J. Messer, assistant professor of computer science, resolved to return to the classroom during treatment for brain tumors.