Error message and refining program!

Question

hI Im getting this error message
can anyone help on whats going wrong here?
any help appreciated
Paul
Enter the item part number: 10001
Enter the date of sales dd-Mmm-yyyy: 11-Apr-2003
Exception in thread "main" java.io.FileNotFoundException: 10001 (The system cann
ot find the file specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(Unknown Source)
at java.io.FileReader.<init>(Unknown Source)
at week12.main(week12.java:27)
Here is the program and input files at bottom
import java.io.*;
import B102.*;
public class week12{
public static void main(String[] args) throws IOException{
int i;
int numrecords = 0;int index = 0;
int input_part = 0;
String line;
String str1, str2;
String stock;
String sales;
int partno[];
double price[];
String date[];
System.out.print("Enter the item part number: ");
stock = Keybd.in.readLine();
System.out.print("Enter the date of sales dd-Mmm-yyyy: ");
sales = Keybd.in.readLine();
System.out.print(" ");//This is only for spacing when printing to screen
BufferedReader infile1 = new BufferedReader(new FileReader(stock));
line = infile1.readLine();
numrecords = Integer.parseInt(line.trim());
price = new double[numrecords];
partno = new int[numrecords];
for(i = 0; i < numrecords; i++){
line = infile1.readLine();
index = line.indexOf(' ');
str1 = line.substring(0,index);//get part number
str2 = line.substring(index); //get price
partno[i] = Integer.parseInt(str1.trim());
price[i] = Double.parseDouble(str2.trim());
// close the file
try{
infile1.close();
//infile2.close();
}catch (IOException iox){
System.out.println("problem closing input file");
BufferedReader infile2 = new BufferedReader(new FileReader(sales));
line = infile2.readLine();
numrecords = Integer.parseInt(line.trim());
date = new String[numrecords];
for(i = 0; i < numrecords; i++){
line = infile2.readLine();
index = line.indexOf(' ');
str1 = line.substring(0,index);
str2 = line.substring(index);
date[i] = str2.trim();
// close the file
try{
//infile1.close();
infile2.close();
}catch (IOException iox){
System.out.println("problem closing input file");
PrintWriter outfile = new PrintWriter(new FileOutputStream("out.txt"));
//output contents of arrays
for(i=0;i<numrecords;i++){
outfile.println(partno[i]+" "+price);
System.out.println(partno[i]+" "+price[i]);
outfile.close();
//input file1 (stock)
10001 14.99 speakers
10021 5.99 mouse
10031 200.0 17"-Monitor
10041 215.0 Motherboard
10051 14.5 Keyboard
10061 1.1 mousepad
10071 199.99 desk
10081 15.49 floppydisk
10091 59.89 cdrom
10111 69.99 dvdrom
10221 479.99 dvdburner
10331 199.89 cpu
10441 180.0 harddisk
10551 139.0 gf4-440video
10661 59.99 pc2100-256m-ram
10762 213.44 printer
10871 6.99 printer-cable
10992 249.99 wireless-router-modem
//input file 2 (sales)
10-Apr-2003 10001 C00001 123 233.35
10-Apr-2003 10021 C00002 200 223.35
10-Apr-2003 10001 C00005 123 243.35
10-Apr-2003 10041 C00021 403 23.35
10-Apr-2003 10001 C00007 123 223.35
10-Apr-2003 10061 C00071 222 263.35
10-Apr-2003 10071 C00331 010 273.35
11-Apr-2003 10081 C00441 001 253.35
11-Apr-2003 10091 C00551 020 223.35
11-Apr-2003 10081 C00441 001 253.35
11-Apr-2003 10081 C00441 001 263.35
11-Apr-2003 10331 C03331 405 213.35
11-Apr-2003 10441 C04441 133 2333.35
11-Apr-2003 10081 C00441 001 252.35
11-Apr-2003 10661 C06661 155 253.35
12-Apr-2003 10762 C07771 166 263.35
12-Apr-2003 10871 C08881 177 293.35
12-Apr-2003 10992 C09991 175 203.35
12-Apr-2003 10762 C07775 165 269.99

Answer 1

It's saying that it can't find the file named "10001", which should be obvvious from the error message, in particular, this part: "java.io.FileNotFoundException: 10001 (The system cannot find the file specified)".
Considering that 10001 is apparently the item number, and your data file includes multiple items in a single file as so it's probable that an individual item number is not also the file name, it seems reasonable to expect that this exception would result from your program.