The f=init function does not affect Java applications as it only reloads JavaScript, VBScript, and ACL custom applications. After an Arbortext PE sub-process has started, its JVM can't reload a .class or .jar file from the PE_HOME\custom directory. You need to restart the servlet container to reload .class or .jar files in the Arbortext PE sub-process. For example, if you were using Tomcat, you would stop and restart it to reload your Java file.