This doesn't have to do with the types or null-ness of objects going into the map, but rather with the implementaiton internals of LinkedHashSet.
LinkedHashMap . addNewEntry, line 193: http://www.google.com/codesearch/p?hl=ru#cZwlSNS7aEw/libcore/luni/src/main/java/java/util/LinkedHashMap.java&q=LinkedEntry%20lang:java&l=193 LinkedEntry extends HashMapEntry: http://www.google.com/codesearch/p?hl=ru#cZwlSNS7aEw/libcore/luni/src/main/java/java/util/LinkedHashMap.java&q=LinkedEntry%20lang:java&l=148 Definition of "table", whose element is assigned to: http://www.google.com/codesearch/p?hl=ru#cZwlSNS7aEw/libcore/luni/src/main/java/java/util/HashMap.java&q=LinkedEntry%20lang:java&d=7&l=94 an array of HashMap$HashMapEntry Based on the above, the assignment at line 193 should succeed. Might this be a Java runtime bug? .... of course if that's actually the version of java.util.* that is used in Android 3.0.1. But it looks reasonable, given that 1) the line number matches and 2) the top of the page says this is a cached copy of source.android.com. -- Kostya 2011/5/27 Streets Of Boston <flyingdutc...@gmail.com> > Debug it. > put getCell(i) into a variable and see what that variable is. > And it seems that during run-time something is about to be stored in a > LinkedHash*Map* (and not in LinkedHashSet as shown in your code). > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to android-developers@googlegroups.com > To unsubscribe from this group, send email to > android-developers+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en