question: public void onLogin ( Player player ) { List < Achievement > toCheck = new ArrayList < Achievement > ( ) ; final Map < Category , List < Achievement > > map = new HashMap < Category , List < Achievement > > ( achievements ) ; map . remove ( Category . OUTSIDE_ZONE ) ; map . remove ( Category . UNDERGROUND_ZONE ) ; Collection < List < Achievement > > values = map . values ( ) ; for ( List < Achievement > list : values ) { toCheck . addAll ( list ) ; } final List < Achievement > reached = checkAchievements ( player , toCheck ) ; if ( ! reached . isEmpty ( ) ) { StringBuilder sb = new StringBuilder ( ) ; sb . append ( "You have reached " ) ; sb . append ( Integer . valueOf ( reached . size ( ) ) ) ; sb . append ( " new " + Grammar . plnoun ( reached . size ( ) , "achievement" ) + ". Please check #http://stendhalgame.org for details." ) ; player . sendPrivateText ( sb . toString ( ) ) ; } }
target:  Checks on login of a player which achievements the player has reached and gives a summarizing message