Question

I wrote this function which will attempt to store the map but its not working I think? I am using netbeans and each time i go to the directory of project in the java src i can’t find the created file or anywhere else in the project. The map is surely valid because output comes out perfect when am not dealing with storage. btw I do implement seriliazable 🙂

Note: the map is of type TreeMap

 public boolean storeMap(TreeMap<DateTime, Integer> map){
   try{
     f_out = new FileOutputStream("mapObject.data");
     obj_out = new ObjectOutputStream (f_out);
     obj_out.writeObject(map);
     return true;
    }catch(IOException ioe){
        System.err.print(ioe);
        return false;
    }
}

is there a reason why the output file is not generated?
Thanks

Answer 1

I suggest to use absolute path, that is something like

f_out = new FileOutputStream("/home/username/mapObject.data");

or on windows

f_out = new FileOutputStream("c:\\work\\mapObject.data");

If there was no exception thrown (System.err.print(ioe); this line did not print anything) then the file was created somewhere.