Change GlassFish JSP from 1.5 to higher
ERROR MESSAGE : org.apache.jasper.JasperException: PWC6033: Error in Javac compilation for JSP PWC6199: Generated servlet error: The source value 1.5 is out of date, will delete all the releases of the future PWC6199: Generated servlet error: The target value of 1.5 is out of date, will delete all the releases of the future PWC6199: Generated servlet error: To hide the obsolete option warning, please use the -Xlint:-options. PWC6197: An error occurred at line: 12 in the jsp file: /WEB-INF/jsp/view/viewCart.jsp PWC6199: Generated servlet error: -Source 1.5 does not support the diamond operator (please use -source version 7 or higher to enable the diamond operator) Solution On MAC : go to /Users/username/GlassFish_Server/glassfish/domains/domain2/config open the default_web.xml file find the <servlet-name> jsp</servlet-name> add <init-param> <param-name>compilerSourceVM</param-name> <param-value>1.8</param-val