Import Java.nio.file.*; Import Java.io.*;

question 62

Essay

import java.nio.file.*;
import java.io.*;
import java.nio.channels.FileChannel;
import java.nio.ByteBuffer;
import static java.nio.file.StandardOpenOption.*;
import java.util.Scanner;
public class CreateEmployeesRandomFile
{
public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
Path file =
Paths.get("C: \\Java\\Chapter.13\\RandomEmployees.txt");
String s = "000, ,00.00" +
System.getProperty("line.separator");
final int RECSIZE = s.length();
FileChannel fc = null;
String delimiter = ",";
String idString;
int id;
String name;
String payRate;
final String QUIT = "999";
try
{
fc = (FileChannel)Files.newByteChannel(file, READ, WRITE);
System.out.print("Enter employee ID number >> ");
idString = input.nextLine();
while(!(idString.equals(QUIT)))
{
_____________________________
System.out.print("Enter name for employee #" +
id + " >> ");
name = input.nextLine();
System.out.print("Enter pay rate >> ");
payRate = input.nextLine();
s = idString + delimiter + name + delimiter +
payRate + System.getProperty("line.separator");
byte[] data = s.getBytes();
ByteBuffer buffer = ByteBuffer.wrap(data);
_____________________________
fc.write(buffer);
System.out.print("Enter next ID number or " +
QUIT + " to quit >> ");
idString = input.nextLine();
}
fc.close();
}
catch (Exception e)
{
System.out.println("Error message: " + e);
}
The above program will accept any number of employee records as user input and write the records to a file in a loop. In the first shaded line, create the statement to accept the employee data value from the keyboard as a String and convert it to an integer using the parseInt() method. In the second shaded line, create the statement to compute the record's desired position by multiplying the ID number value by the record size.

---

Definitions:

Front Matter

The preliminary sections of a book or document, including the title page, table of contents, and foreword.

Recommendation Report

A document that evaluates options or solutions and suggests the most suitable one for implementation.

Compound Conclusion

A conclusion in an argument or piece of writing that integrates multiple findings or ideas into a cohesive final statement.

Back Matter

The final sections of a book, including the index, glossary, and bibliography, among others.