/* Written by Jen Chen
   Updated on March the 4th, 2003
   Copyrighted by Jen Chen
*/
package file_io2;
import java.io.*;
import java.util.*;

public class File_IO4 {
  public static void main(String[] args) throws IOException{
BufferedReader buf = new BufferedReader(new InputStreamReader(System.in));

System.out.print("Enter the file's name: ");  //Enter "Products.csv". This file has 10 fields.
String fname = buf.readLine();
  fname = fname.trim();

BufferedReader in = null;
try{
  in = new BufferedReader(new FileReader(fname));
}
catch(Exception e){
  System.out.println("Unable to open the specified file!");
  System.out.println(e);
  System.exit(1);
}
StringTokenizer st;
int total = 1;
int linenum = 0;

try{
  in = new BufferedReader(new FileReader(fname));
  String  line = in.readLine();
    while(line != null){
      linenum++;
    st = new StringTokenizer(line, ",");
    if(st.countTokens() == 0) continue;  //empty line
    while(st.hasMoreTokens()){
      String st2 = (String) st.nextToken();
      if(total%10 == 2)  //Assume that there are 10 fields in this data file. Print the 2nd field
        System.out.print(st2 + "\t");
      if(total%10 == 6)  //Assume that there are 10 fields in this data file. Print the 6th field
        System.out.println(st2);
    total++;
      }
    line = in.readLine();
    }
}
catch(Exception e){
  System.out.println(e);
  System.exit(0);
  }

  }  //end of main()
} // end of clasa File_IO4{}

/* Here is the Products.csv file ----------------
ProductID,ProductName,SupplierID,CategoryID,QuantityPerUnit,UnitPrice,UnitsInStock,UnitsOnOrder,ReorderLevel,Discontinued
1,Chai,1,1,10 boxes x 20 bags,$18.00 ,39,0,10,0
2,Chang,1,1,24 - 12 oz bottles,$19.00 ,17,40,25,0
3,Aniseed Syrup,1,2,12 - 550 ml bottles,$10.00 ,13,70,25,0
4,Chef Anton's Cajun Seasoning,2,2,48 - 6 oz jars,$22.00 ,53,0,0,0
5,Chef Anton's Gumbo Mix,2,2,36 boxes,$21.00 ,0,0,0,1
6,Grandma's Boysenberry Spread,3,2,12 - 8 oz jars,$25.00 ,120,0,25,0
7,Uncle Bob's Organic Dried Pears,3,7,12 - 1 lb pkgs.,$30.00 ,15,0,10,0
8,Northwoods Cranberry Sauce,3,2,12 - 12 oz jars,$40.00 ,6,0,0,0
9,Mishi Kobe Niku,4,6,18 - 500 g pkgs.,$97.00 ,29,0,0,1
10,Ikura,4,8,12 - 200 ml jars,$31.00 ,31,0,0,0
11,Queso Cabrales,5,4,1 kg pkg.,$21.00 ,22,30,30,0
12,Queso Manchego La Pastora,5,4,10 - 500 g pkgs.,$38.00 ,86,0,0,0
13,Konbu,6,8,2 kg box,$6.00 ,24,0,5,0
14,Tofu,6,7,40 - 100 g pkgs.,$23.00 ,35,0,0,0
15,Genen Shouyu,6,2,24 - 250 ml bottles,$15.00 ,39,0,5,0
16,Pavlova,7,3,32 - 500 g boxes,$17.00 ,29,0,10,0
17,Alice Mutton,7,6,20 - 1 kg tins,$39.00 ,0,0,0,1
18,Carnarvon Tigers,7,8,16 kg pkg.,$62.00 ,42,0,0,0
19,Teatime Chocolate Biscuits,8,3,10 boxes x 12 pieces,$9.00 ,25,0,5,0
20,Sir Rodney's Marmalade,8,3,30 gift boxes,$81.00 ,40,0,0,0
21,Sir Rodney's Scones,8,3,24 pkgs. x 4 pieces,$10.00 ,3,40,5,0
22,Gustaf's Knäckebröd,9,5,24 - 500 g pkgs.,$21.00 ,104,0,25,0
23,Tunnbröd,9,5,12 - 250 g pkgs.,$9.00 ,61,0,25,0
24,Guaraná Fantástica,10,1,12 - 355 ml cans,$4.00 ,20,0,0,1
25,NuNuCa Nuß-Nougat-Creme,11,3,20 - 450 g glasses,$14.00 ,76,0,30,0
26,Gumbär Gummibärchen,11,3,100 - 250 g bags,$31.00 ,15,0,0,0
27,Schoggi Schokolade,11,3,100 - 100 g pieces,$43.00 ,49,0,30,0
28,Rössle Sauerkraut,12,7,25 - 825 g cans,$45.00 ,26,0,0,1
29,Thüringer Rostbratwurst,12,6,50 bags x 30 sausgs.,$123.00 ,0,0,0,1
30,Nord-Ost Matjeshering,13,8,10 - 200 g glasses,$25.00 ,10,0,15,0
31,Gorgonzola Telino,14,4,12 - 100 g pkgs,$12.00 ,0,70,20,0
32,Mascarpone Fabioli,14,4,24 - 200 g pkgs.,$32.00 ,9,40,25,0
33,Geitost,15,4,500 g,$2.00 ,112,0,20,0
34,Sasquatch Ale,16,1,24 - 12 oz bottles,$14.00 ,111,0,15,0
35,Steeleye Stout,16,1,24 - 12 oz bottles,$18.00 ,20,0,15,0
36,Inlagd Sill,17,8,24 - 250 g  jars,$19.00 ,112,0,20,0
37,Gravad lax,17,8,12 - 500 g pkgs.,$26.00 ,11,50,25,0
38,Côte de Blaye,18,1,12 - 75 cl bottles,$263.00 ,17,0,15,0
39,Chartreuse verte,18,1,750 cc per bottle,$18.00 ,69,0,5,0
40,Boston Crab Meat,19,8,24 - 4 oz tins,$18.00 ,123,0,30,0
41,Jack's New England Clam Chowder,19,8,12 - 12 oz cans,$9.00 ,85,0,10,0
42,Singaporean Hokkien Fried Mee,20,5,32 - 1 kg pkgs.,$14.00 ,26,0,0,1
43,Ipoh Coffee,20,1,16 - 500 g tins,$46.00 ,17,10,25,0
44,Gula Malacca,20,2,20 - 2 kg bags,$19.00 ,27,0,15,0
45,Rogede sild,21,8,1k pkg.,$9.00 ,5,70,15,0
46,Spegesild,21,8,4 - 450 g glasses,$12.00 ,95,0,0,0
47,Zaanse koeken,22,3,10 - 4 oz boxes,$9.00 ,36,0,0,0
48,Chocolade,22,3,10 pkgs.,$12.00 ,15,70,25,0
49,Maxilaku,23,3,24 - 50 g pkgs.,$20.00 ,10,60,15,0
50,Valkoinen suklaa,23,3,12 - 100 g bars,$16.00 ,65,0,30,0
51,Manjimup Dried Apples,24,7,50 - 300 g pkgs.,$53.00 ,20,0,10,0
52,Filo Mix,24,5,16 - 2 kg boxes,$7.00 ,38,0,25,0
53,Perth Pasties,24,6,48 pieces,$32.00 ,0,0,0,1
54,Tourtière,25,6,16 pies,$7.00 ,21,0,10,0
55,Pâté chinois,25,6,24 boxes x 2 pies,$24.00 ,115,0,20,0
56,Gnocchi di nonna Alice,26,5,24 - 250 g pkgs.,$38.00 ,21,10,30,0
57,Ravioli Angelo,26,5,24 - 250 g pkgs.,$19.00 ,36,0,20,0
58,Escargots de Bourgogne,27,8,24 pieces,$13.00 ,62,0,20,0
59,Raclette Courdavault,28,4,5 kg pkg.,$55.00 ,79,0,0,0
60,Camembert Pierrot,28,4,15 - 300 g rounds,$34.00 ,19,0,0,0
61,Sirop d'érable,29,2,24 - 500 ml bottles,$28.00 ,113,0,25,0
62,Tarte au sucre,29,3,48 pies,$49.00 ,17,0,0,0
63,Vegie-spread,7,2,15 - 625 g jars,$43.00 ,24,0,5,0
64,Wimmers gute Semmelknödel,12,5,20 bags x 4 pieces,$33.00 ,22,80,30,0
65,Louisiana Fiery Hot Pepper Sauce,2,2,32 - 8 oz bottles,$21.00 ,76,0,0,0
66,Louisiana Hot Spiced Okra,2,2,24 - 8 oz jars,$17.00 ,4,100,20,0
67,Laughing Lumberjack Lager,16,1,24 - 12 oz bottles,$14.00 ,52,0,10,0
68,Scottish Longbreads,8,3,10 boxes x 8 pieces,$12.00 ,6,10,15,0
69,Gudbrandsdalsost,15,4,10 kg pkg.,$36.00 ,26,0,15,0
70,Outback Lager,7,1,24 - 355 ml bottles,$15.00 ,15,10,30,0
71,Flotemysost,15,4,10 - 500 g pkgs.,$21.00 ,26,0,0,0
72,Mozzarella di Giovanni,14,4,24 - 200 g pkgs.,$34.00 ,14,0,0,0
73,Röd Kaviar,17,8,24 - 150 g jars,$15.00 ,101,0,5,0
74,Longlife Tofu,4,7,5 kg pkg.,$10.00 ,4,20,5,0
75,Rhönbräu Klosterbier,12,1,24 - 0.5 l bottles,$7.00 ,125,0,25,0
76,Lakkalikööri,23,1,500 ml,$18.00 ,57,0,20,0
77,Original Frankfurter grüne Soße,12,2,12 boxes,$13.00 ,32,0,15,0