//Example reads in employee data from user
//data is not stored in an Employee object but is written into files using
//Formatter
//PrintWriter
//BufferedWriter
import java.io.FileWriter; import java.io.BufferedWriter; import java.io.PrintWriter; import java.io.File; import java.util.Formatter; import java.util.Scanner;

class FileWriterDemo {

public void buffEmployeeFileWriter() throws Exception { String fName; String lName; int id; boolean quit = false; boolean response = true; Scanner console = new Scanner(System.in); Scanner input = new Scanner(System.in);

Formatter output = new Formatter("EmployeeFormatter.txt"); //opens the file for editing FileWriter file = new FileWriter("EmployeePrintWriter.txt"); PrintWriter print = new PrintWriter(file); //turn on append flag for EmployeeBufferedFileWriter.txt FileWriter fwriter2 = new FileWriter(new File("EmployeeBufferedFileWriter.txt"), true); BufferedWriter bfw = new BufferedWriter(fwriter2);

try { while (quit != response) { System.out.print("Enter Employee First Name:\n"); fName = input.next();

System.out.print("Enter Employee Last Name:\n"); lName = input.next();

System.out.print("Enter Employee id:\n"); id = input.nextInt();

//Example using Formatter System.out.println("Writing out using Formatter\n");

System.out.printf("%s %s %d\n", fName, lName, id); //System.getProperty("line.separator") used for newline output.format("%s %s %d", fName, lName, id); output.format("%s", System.getProperty("line.separator"));

//Example using PrintWriter System.out.println("Writing out using PrintWriter\n");

//Notice how \n looks inside your file. //System.getProperty("line.separator") which was used in the Formatter //example produces and accurate newline. \n does not //Look on line 47 for an example. print.format("%s %s %d\n", fName, lName, id);

//Example using BufferedWriter System.out.println("Writing out using Buffered FileWriter\n");

System.out.print(lName + " " + fName + " " + id + " " + "\n");

bfw.write(lName + " "); bfw.write(fName + " "); bfw.write(id + " "); bfw.write(System.getProperty("line.separator"));

System.out.println("Do you want to enter more Employee data? Enter true/false"); response = console.nextBoolean(); } //while

//close all files used output.close(); file.close(); bfw.close();

} catch (Exception e) //catch in case the file has issues {

System.err.println("File problems: " + e.getMessage()); System.exit(1); }

}
}