dictionary - java.lang.NegativeArraySizeException with WeakHashMap keySet -


i have following code:

 public synchronized static arraylist<httpsession> getcurrentsessionlist() {       return new arraylist<httpsession>(sessions.keyset());    }

we have client getting java.lang.negativearraysizeexception list initialised values of keys map sessions. unable replicate it. using openjdk 7 build 71, on linux.

sessions weakhashmap assume causing issue. understand creating new list create hard-reference items in maps, short lived , used reporting on contents of map.

the reason arraylist created items can manipulated in loops etc., without having worry items in weakhashmap disappearing.

can suggest safe way of initialising list?


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