filling array from command line txt.file java

Question

I've been trying to fill an array with strings & break it into different arrays, but i must not be reading it in right because my array has nothing in it?

File inf = FileUtil.openFile(args);  // open the file passedin in args
      Scanner fin = new Scanner(inf);


public static File readFileInfo(Scanner kb)throws FileNotFoundException


{
      String fileName = null;

  File inFile = null;

  do
  {
     System.out.print("Enter the name of the input file: ");
     fileName = kb.nextLine();
     inFile = new File(fileName);
  }while(!inFile.exists());  

  return inFile;


}// end readFileInfo


 public static Author[] fillArray(Scanner fin)
{
      Author[] array = new Author[100];
      String first_ = null;
      String last_ = null;
      String publisher_ = null;
      int x = 0;

  while(fin.hasNext())
  {  
     first_ = fin.nextLine();
     last_ = fin.nextLine();
     publisher_ = fin.nextLine();
     Author temp = new Author(first_, last_, publisher_);
     array[x] = temp;
     x++;
  }

  return array;

I dont see anywhere your reading or writing to a file.

ug_
– ug_

2013-11-15 23:58:43 +00:00
Commented Nov 15, 2013 at 23:58 — ug_
– ug_, Commented Nov 15, 2013 at 23:58

Ankit Rustagi · Accepted Answer · 2013-11-16 00:03:08Z

2

Maybe the problem is that you check if you have one more token but try to fetch three tokens

while(fin.hasNext())  // CHECK IF WE HAVE ONE MORE TOKEN
{  
 first_ = fin.nextLine();      // FETCH THREE
 last_ = fin.nextLine();
 publisher_ = fin.nextLine();
 Author temp = new Author(first_, last_, publisher_);
 array[x] = temp;
 x++;
}

This may have lead to an exception, and the empty array.

answered Nov 16, 2013 at 0:03

Ankit Rustagi

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