java - Problems using contains() method for arraylist -


i trying check if arraylist b contains string arraya this, doesn't work:

string match = arraya[i]; if (! b.contains(match)) {     outputfile.print(match); }

is because used contains() method incorrectly?
can put name of variable in contains() method contains(match) here?
or have put string in contains(), contains("name")?

in 

  if (! b.contains(match))

you check, if b not contain match. apart that, approach valid.


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