Keep the JavaRa program and use it one in awhile or visit the Sun site and check for updates.
Everest you don't need to keep as that is a system info program so does no good unless you need information. You can always download it again if you need it.
Revo Uninstaller you can get rid of
Zone Alarm I'm not sure what you are using it for but the spyware part you can get SuperAntiSpyware for that. Less resource hog
If you are using ZoneAlarm for firewall then uninstall it and get Comodo Firewall
All the program I suggest are free and most can be found in my signature below.