java - keeping track of text based hangman game in an output file -

long story short, gameplayword word randomly determined list of words hangman game read (in case easy words file). easycontentlist arraylist of data in file. file 2 columns, first col - words can used, 2nd - number representing how many times word used. (0 in initial file) need keep track of number based on each iteration of game. easyfileupdatelist string arraylist declared @ class level. problem doesn't work:

public void updateeasyfile(string gameplayword, arraylist<string> easycontentlist) {      integer used = 0; // represents used word count     string strused = "";       (int = 0; < easycontentlist.size() - 1; i++) {         string oneline;         oneline = easycontentlist.get(i);         tokenizer = new stringtokenizer(oneline);          string firsttoken = tokenizer.nexttoken();          if (firsttoken.equals(gameplayword)) {             used = integer.parseint(tokenizer.nexttoken());             used++;             strused = used.tostring();             easyfileupdatelist.add(gameplayword + "    " + strused + "    " + "todo");         }         if (!firsttoken.equals(tokenizer.nexttoken())) // add first token of every line except first             easyfileupdatelist.add(oneline);             }      try {          printwriter printwriter = new printwriter(new fileoutputstream(new file("hmeasy.txt")));          (string oneline : easyfileupdatelist) {             printwriter.println(oneline);         }         printwriter.close();     }     catch (filenotfoundexception fnfe) {         fnfe.printstacktrace();     } } 

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update

thank you, hash sets. let me clarify little more, i'm still not following completely.

correct, file said, if words dog, cat, , fog file like:

dog    0 cat    0 fog    0 

there 3rd column of zeros, todo i'll worry later.

you correct problem having is adding new entry word , 1 in 2nd column. if fog randomly picked 3 times in row , method executed say

dog    0 cat    0 fog    1 dog    0 cat    0 fog    1 fog    1 dog    0 cat    0 fog    1 fog    1 fog    1 

what i'm looking is: first round:

dog   0 cat   0  fog   1 

2nd round:

dog   0 cat   0 fog   2 

etc...

i need update number in file each time word randomly chosen.

near can tell if hmeasy.txt file looks this:

 firstgameplayword    0  secondgameplayword    0 

and if first entry played this:

 firstgameplayword    0  secondgameplayword    0  firstgameplayword    1    todo 

which, suspect, not want. it's doing because use line:

easyfileupdatelist.add(gameplayword + "    " + strused + "    " + "todo"); 

since arraylist add() tacks line @ end.

i tell instead use set() i worked hard find encouraging bad design. should stop using arraylist this. wasn't designed lookups.

instead encourage @ using linkedhashset<string, integer>. no need tokenize, lookups fast, , in same order added.

when trying find right data structure in java @ this: