java - Trouble referencing values from array -


i have bit of issue. right now, part of chemistry program, have:

public static substance na; public static substance br;  public static substance nabr;  public static substance[][] combinations = {              {nabr, nacl},          {na  , na },              {br  , cl }}; combinations[0][0] = new compound(550);  addcombination(combinations[0][0] , combinations[1][0], combinations[2][0]);

the goal here add combination uses na , br make nabr. unfortunately, program seems referencing "combinations[1][0]" , "combinations[2][0]" own variables instead of "na" , "br" meant reference. if substitute values "na" , "br" respectively, runs charm!... ideas on how make array recognized referencing pre-initialized "na" , "br" instead of ones in array?

any appreciated! thank in advance!

from code can assume have initialized "na" , "br" after delcaring

public static substance[][] combinations = {              {nabr, nacl},              {na  , na },              {br  , cl }};

if initalize "na" , "br" @ top of code notice works fine, because combinations declared when 2 variables not references not exist. try this

public static substance na = new substance(...); public static substance br = new substance(...);  public static substance nabr = new substance(...);  public static substance[][] combinations = {              {nabr, nacl},          {na  , na },              {br  , cl }};

and should work.


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