Hy,
At the end of this page : http://www.languagetool.org/usage/
The command line doesn’t work :
java -cp LanguageTool.jar de.danielnaber.languagetool.server.HTTPServer
I have found on the forum this one :
java -Dfile.encoding=utf-8 -cp LanguageTool.jar org.languagetool.server.HTTPServer
Can you update the site ?
Regards