Question

Cant figure out how to fix error

Code-

import java.io.File;
import java.io.IOException;
import java.util.*;

public class Program8 {
   public static void main(String[] args)throws IOException{
       File prg8 = new File("program8.txt");
       Scanner reader = new Scanner(prg8);
       String cName = "";
       int cID = 0;
       double bill = 0.0;
       String email = "";
       double nExempt = 0.0;
       String tExempt = "";
       int x = 0;
       int j = 1;

       while(reader.hasNextInt()) {
           x = reader.nextInt();}
       Customers c1 [] = new Customers [x];
       for (int i = 0; i < x; i++) {
           cName = reader.next();
           cID = reader.nextInt();
           bill = reader.nextDouble();
           email = reader.next();  
           if (reader.hasNextDouble()) {
               nExempt = reader.nextDouble();
               c1 [i] = new Customers(cName, cID, bill, email, nExempt);          
           }
           else if (reader.hasNext()) {
               tExempt = reader.next();
               c1 [i] = new Customers(cName, cID, bill, email, tExempt);      
           }  
       }  
       reader.close();
       Arrays.sort(c1);
       for (int i = 0; i < x ; i++) {

           if (i % 45 == 0) {
               System.out.println("\n");
               printHeader(j);
               j++;
           }

           System.out.println(c1[i]);
       }  

   }
   public static void printHeader(int j) {

       System.out.printf("%84s %32s ", "Office Supplies Inc Customer Report" , "Page: " + j + " \n");
       System.out.printf("%87s", "=================================== \n\n\n");
       System.out.printf("%-20s %5s %27s %30s %16s %13s","Customer Name" ,"ID", "Email Address", "Balance" ,"Tax Type" , "Tax Amount" + "\n");
       System.out.printf("%-20s %5s %27s %30s %16s %14s","=============" ,"==", "=============", "=======" ,"========" , "========== " + "\n");
       System.out.println();
   }
}

class Customers implements Comparable<Customers> {
   private String cName;
   private int cID;
   private double bill;
   private String email;
   private double nExempt;
   private String tExempt;

   public Customers() {
       cName = "";
       cID = 0;
       bill = 0.0;
       email = "";
       nExempt = 0.0;
       tExempt = "";
   }

   public Customers (String name, int cID, double bill, String email, double nExempt) {
       this.cName = name;
       this.cID = cID;
       this.bill = bill;
       this.email = email;
       this.nExempt = nExempt;
   }
   public Customers (String name, int cID, double bill, String email, String tExempt) {
       this.cName = name;
       this.cID = cID;
       this.bill = bill;
       this.email = email;
       this.tExempt = tExempt;
   }

   public String getCName () {
       return cName;
   }
   public String getEmail () {
       return email;
   }
   public String getTExempt () {
       return tExempt;
   }
   public int getCID() {
       return cID;
   }
   public double getBill() {
       return bill;
   }
   public double getnExempt() {
       return nExempt;
   }
   public void setCName (String cName) {
       this.cName = cName;
   }
   public void setEmail (String email) {
       this.email = email;
   }
   public void setTExempt (String tExempt) {
       this.tExempt = tExempt;
   }
   public void setCID (int cID) {
       this.cID = cID;
   }
   public void setnExempt (double nExempt) {
       this.nExempt = nExempt;
   }

   @Override
   public int compareTo(Customers it) {
       if (this.getCID()== it.getCID()) {
           return 0;
       }
       else if (this.getCID() < it.getCID()) {
           return -1;
       }
       else
           return 1;
   }
   @Override
   public String toString() {
       String temp = "";
       if (nExempt != 0.0) {
           temp = String.format("%-20s %5d\t\t %-30s %,13.2f %15s %12.2f", cName, cID, email, bill, "tax liable", (nExempt * bill) );
       }
       else {
           temp = String.format("%-20s %5d\t\t %-30s %,13.2f %15s ", cName, cID, email, bill, tExempt );
       }
       return temp;
   }
}

Error-

Exception in thread "main" java.io.FileNotFoundException: program6.txt (No such file or directory)

at java.base/java.io.FileInputStream.open0(Native Method)

at java.base/java.io.FileInputStream.open(FileInputStream.java:220)

at java.base/java.io.FileInputStream.<init>(FileInputStream.java:158)

at java.base/java.util.Scanner.<init>(Scanner.java:639)

at Program6.main(Program6.java:8)

Answer 1

This error is happening because of the line File prg8 = new File("program8.txt");

The reason for this error is that the java compiler is unable to find this file while running the code and hence, throwing the error.

Following are the steps to get rid of this error:

1. Make sure that the file program8.txt is created in the same directory as your project workspace.

2. In order to be safer, provide the full absolute path of the file while opening it.

For example, File prg8 = new File("/Usrs/project/program8.txt");