create macos tomcat startup script

 mkdir Tomcat
 cd Tomcat
 cp /System/Library/StartupItems/Apache/Apache ./Tomcat
 cp /System/Library/StartupItems/Apache/StartupParameters.plist .
 vi StartupParameters.plist

{
  Description     = "Tomcat servlet engine";
  Provides        = ("Servlet Engine");
  Requires        = ("DirectoryServices");
  Uses            = ("NFS");
  OrderPreference = "None";
}

 vi Tomcat

# Tomcat Servlet Engine
. /etc/rc.common
StartService ()
{
    ConsoleMessage "Starting Tomcat"
    /usr/local/jakarta-tomcat-4.1.18/bin/startup.sh
}
StopService ()
{
    ConsoleMessage "Stopping Tomcat"
    /usr/local/jakarta-tomcat-4.1.18/bin/shutdown.sh
}
RestartService ()
{
    ConsoleMessage "Restarting Tomcat"
    /usr/local/jakarta-tomcat-4.1.18/bin/shutdown.sh
    /usr/local/jakarta-tomcat-4.1.18/bin/startup.sh
}
JAVA_HOME=/Library/Java/Home; export JAVA_HOME
RunService "$1"

 mv Tomcat /Library/StartupItems/