[ root @ localhost eclipse ] # which Java/usr/bin/Java [ root @ localhost eclipse ] # ls-l/usr/bin/Java lrwxrwx1rwx Java [ root @ localhost eclipse ] # ls/etc/alternatives/antlr JRE _1.4.2_ export sprint-cancelmanetagsjre _ export sprint-lpjarjre _ gcj print-lpcjarsignerjre _ gcj _ eer ta-aliasesmanprint-lprm Java _ SDK MTA-mailq print-lprmanjava _ SDK an Java _ SDK _1.4.2_ exports MTA-newaliases pstatmanjava _ exports MTA-newaliasesmanprint-lpstat manja MTA-rmailrmiregistryjaxp _ parser _ impl MTA-sendmailservletetor