12 colliding keys (all hashCode()==1, so bin index 1) inserted into HashMap and ConcurrentHashMap ================================================================================================= insert | HashMap table[1] (length) | ConcurrentHashMap table[1] (length, sizeCtl) #1 | Node (length 16 ) | Node (length 16 , sizeCtl 12) #2 | Node (length 16 ) | Node (length 16 , sizeCtl 12) #3 | Node (length 16 ) | Node (length 16 , sizeCtl 12) #4 | Node (length 16 ) | Node (length 16 , sizeCtl 12) #5 | Node (length 16 ) | Node (length 16 , sizeCtl 12) #6 | Node (length 16 ) | Node (length 16 , sizeCtl 12) #7 | Node (length 16 ) | Node (length 16 , sizeCtl 12) #8 | Node (length 16 ) | Node (length 16 , sizeCtl 12) #9 | Node (length 32 ) | Node (length 128, sizeCtl 96) #10 | Node (length 64 ) | TreeBin (length 128, sizeCtl 96) #11 | TreeNode (length 64 ) | TreeBin (length 128, sizeCtl 96) #12 | TreeNode (length 64 ) | TreeBin (length 128, sizeCtl 96)