So I am writing 2 programs the first takes inventory name, price, and stock for

Question

So I am writing 2 programs the first takes inventory name, price, and stock for 10 items and creates and saves a file with the information. The second program will output the contents of the file to the user's screen. The output will include appropriate labels for all of the data. I will output data using a loop and I will identify the file to be accessed using a graphic dialog box. The two programs will be independent. By that, I mean that one program will not reference the other using objects or classes.  

I can't seem to find the correct path of the file i've created with the first program and am unable to move forward with the second. I was hoping for someone to take a look and tell me if i've done something wrong with the saving of my file...

First Program:

import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import javax.swing.JOptionPane;

public class InventoryList {
public static void main(String args[]) throws IOException {

String itemPriceString;
String itemStockString;

final int NUM_ITEMS = 10;
String itemName[] = new String[NUM_ITEMS];
double itemStock[] = new double[NUM_ITEMS];
double itemPrice[] = new double[NUM_ITEMS];

FileWriter saveFile = new FileWriter("InventoryItems.txt");
PrintWriter pw = new PrintWriter(saveFile);

// accept the item name, and cost price
// cost price to double and then to final price
// Store data into a file

for (int loopIndex = 0; loopIndex < NUM_ITEMS; loopIndex++) {
itemName[loopIndex] = JOptionPane
.showInputDialog(" This program will accept item name, cost, and inventory. Enter item name: ");

itemPriceString = JOptionPane
.showInputDialog(" Enter the price of item: ");
itemPrice[loopIndex] = Double.parseDouble(itemPriceString);

itemStockString = JOptionPane
.showInputDialog(" Enter number of items in stock: ");
itemStock[loopIndex] = Double.parseDouble(itemStockString);

}

// exit program

for (int loopIndex = 0; loopIndex < NUM_ITEMS; loopIndex++) {
pw.println(itemName[loopIndex] + " $" + itemPrice[loopIndex]
+ " $" + itemStock[loopIndex]);

saveFile.close();
pw.close();

}
  
System.out.println("Thank you for creating a new file");
}
}

what I have so far for the second Program:

import java.io.*;
import javax.swing.JOptionPane;
import java.io.BufferedReader;
import java.io.FileReader;

public class ReadInventoryList
{
public static void main(String args[]) throws Exception
{
String itemName;
double itemPrice, itemStock;
String fileName;

// Get user input for file selection
fileName = JOptionPane.showInputDialog("Please enter the name of the file you would like to display.");
  
  
//open input file.
FileReader fr = new FileReader (fileName);
BufferedReader br = new BufferedReader (fr);

System.exit(0);
}
}
  

Explanation / Answer

Program 1:

To Read input into a file:

import java.io.FileWriter;

import java.io.IOException;

import java.io.PrintWriter;

import javax.swing.JOptionPane;

public class InventoryList {

public static void main(String args[]) throws IOException {

String itemPriceString;

String itemStockString;

final int NUM_ITEMS = 3;//changed the number of items to 3

String itemName[] = new String[NUM_ITEMS];

double itemStock[] = new double[NUM_ITEMS];

double itemPrice[] = new double[NUM_ITEMS];

FileWriter saveFile = new FileWriter("InventoryItems.txt");

PrintWriter pw = new PrintWriter(saveFile);

// accept the item name, and cost price

// cost price to double and then to final price

// Store data into a file

for (int loopIndex = 0; loopIndex < NUM_ITEMS; loopIndex++) {

itemName[loopIndex] = JOptionPane.showInputDialog(" This program will accept item name, cost, and inventory. Enter item name: ");

itemPriceString = JOptionPane.showInputDialog(" Enter the price of item: ");

itemPrice[loopIndex] = Double.parseDouble(itemPriceString);

itemStockString = JOptionPane.showInputDialog(" Enter number of items in stock: ");

itemStock[loopIndex] = Double.parseDouble(itemStockString);

}

// exit program

for (int loopIndex = 0; loopIndex < NUM_ITEMS; loopIndex++) {

pw.println(itemName[loopIndex] + " $" + itemPrice[loopIndex]

+ " $" + itemStock[loopIndex]);

}//the for loop should end here, otherwise only the first record will be stored in the file InventoryItems.txt

saveFile.close();

pw.close();

System.out.println("Thank you for creating a new file");

}

}

Sample output:

InventoryItems.txt

Program 2

To output the file contents on to console:

import java.io.*;

import javax.swing.JOptionPane;

import java.io.BufferedReader;

import java.io.FileReader;

public class ReadInventoryList

{

public static void main(String args[]) throws Exception

{

//String itemName;

//double itemPrice, itemStock;

String fileName;

// Get user input for file selection

fileName = JOptionPane.showInputDialog("Please enter the name of the file you would like to display.");

//open input file.

FileReader fr = new FileReader (fileName);

BufferedReader br = new BufferedReader (fr);

String text;

//read each line in the InventoryItems.txt file using readLine()

while ((text=br.readLine())!= null) {

System.out.println(text);

}

fr.close();

System.exit(0);

}

}

Sample output:

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