java - the value of local variable is not used -


this question has answer here:

i wrote small program check given movie name exist in folder. getting warning on eclipse "the value of local variable not used"

here main method

public static void main(string[] args) {         // todo auto-generated method stub         boolean movie_exist=false;          system.out.println("hellow world!");          try{          filewriting newfolrder = new filewriting("h:\\breakinbad2\\breaking bad season 2 complete 720p.brrip.sujaidr");         //movie_exist=newfolrder.checkfilesname("movie name");         system.out.println(newfolrder.checkmovieexist("breaking bad"));         movie_exist = newfolrder.checkmovieexist("breaking bad");          }catch(nullpointerexception e){             system.out.println("exception :"+ e);         }      }

i warning against variable declaration 

boolean movie_exist=false;

i have assign value variable.

movie_exist = newfolrder.checkmovieexist("breaking bad");

why warning?

what happen if removed use of movie_exist? nothing, application work same way.

you've never used movie_exist expression resolves value, warns may remove or start using it.


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