Using the language packs
If the system locale for your operating system is already in the language you want to launch eclipse in, all you have to do is to launch eclipse normally and the language packs will be loaded.
If the system locale is in English, and you want to launch eclipse in another language, you have to launch eclipse with the-nl command line argument:
Eclipse.exe-nl fr // fr represents a country or region (such as en or ZH)
Replace fr with the locale you wish to use. see "Running Eclipse" for more details. also see the "teach your eclipse to speak the local lingo" Eclipse corner Article For more examples on how to launch eclipse in different versions ages (including bi-directional language like Arabic) and different operating systems (like Linux and Mac OS X ).
PS: the installation of language packs is the same as that of common plug-ins. There are also three common methods. I personally prefer the link method.