Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Mulitple entries-Java

Posted on 2007-11-25
5
Medium Priority
?
203 Views
Last Modified: 2013-11-23
I can't get this code to allow the user to enter more than one entry after hitting yes.

How do I do this?
// Week5.java
 
import java.util.*;
import java.io.*;
 
// class Week5 definition
public class Week5
{
	// method main
	public static void main(String args[])
	{
		System.out.println("This program will create a shopping list:");
 
		// call the inputItems method
		inputItems();
		// call the outputItems method
		outputItems();
 
		System.exit(0);
	}
 
	// method inputItems
	public static void inputItems()
	{
		Scanner keyboard = new Scanner(System.in);	// create a keyboard Scanner
		PrintWriter outFile = null;					// declare a PrintWriter
		String response;
 
 
		try
		{
			outFile = new PrintWriter(new FileOutputStream("shoppinglist.txt"));
			// get first item from user
			System.out.print("Please enter your first item: ");
			outFile.write(keyboard.nextLine() + "\n");
 
 
 
			System.out.print("Do you wish to enter more Items? Yes/No: ");
			response = keyboard.nextLine();
 
			while( response.toUpperCase().equals("Yes") )
			{
				// get next item from user
				System.out.print("Enter your next item: ");
				outFile.write( keyboard.nextLine() + "\n" );
				System.out.print("Do you wish to enter more Items? Yes/No: ");
				response = keyboard.nextLine();
			}
			outFile.close();					// close the file
		}
		catch(FileNotFoundException e)		// catch exception
		{
			// display the error message and exit program
			System.err.println("File write error occurred.");
			System.exit(0);
		}
 
 
 
	}
 
	// method outputItems
	public static void outputItems()
	{
		try
		{
			// create a Scanner for the input file
			Scanner inFile = new Scanner( new File("shoppinglist.txt"));
 
			System.out.println("Your shopping list contains: ");
 
			while( inFile.hasNextLine() )
 
				System.out.println( inFile.nextLine() );
 
			inFile.close();			// close the file
		}
		catch(IOException io)		// catch exception
		{
			// display the error message and exit program
			System.err.println("File read error occurred.");
			System.exit(0);
		}
 
	}
}

Open in new window

0
Comment
Question by:Talulia
5 Comments
 
LVL 92

Accepted Solution

by:
objects earned 1000 total points
ID: 20347228
>                         while( response.toUpperCase().equals("Yes") )

change to:

                        while( response.equalsIgnoreCase("yes") )
0
 

Author Comment

by:Talulia
ID: 20347263
I've corrected that part.

How do I get the textfile to read the items inputted like this:

Ham
Cheese
Sausage

instead of like this:

HamCheeseSausage

I know I need to use the StringTokenizer class but not sure how to use it. "I think", anyways.
// Week5.java
 
import java.util.*;
import java.io.*;
 
// class Week5 definition
public class Week5
{
	// method main
	public static void main(String args[])
	{
		System.out.println("This program will create a shopping list:\n");
 
		// call the inputItems method
		inputItems();
		// call the outputItems method
		outputItems();
 
		System.exit(0);
	}
 
	// method inputItems
	public static void inputItems()
	{
		Scanner keyboard = new Scanner(System.in);	// create a keyboard Scanner
		PrintWriter outFile = null;					// declare a PrintWriter
		String response;
		String newentry;
 
 
		try
		{
			outFile = new PrintWriter(new FileOutputStream("shoppinglist.txt"));
			// get first item from user
			System.out.print("Please enter your first item: ");
			outFile.write(keyboard.nextLine() + "\n");
 
 
 
			System.out.print("Do you wish to enter more Items? Yes/No: ");
			response = keyboard.nextLine();
 
			while( response.equalsIgnoreCase("yes"))
			{
				// get next item from user
				System.out.print("Enter your next item: ");
				outFile.write( keyboard.nextLine() + "\n" );
 
				System.out.print("Do you wish to enter more Items? Yes/No: ");
				response = keyboard.nextLine();
			}
			outFile.close();					// close the file
		}
		catch(FileNotFoundException e)		// catch exception
		{
			// display the error message and exit program
			System.err.println("File write error occurred.");
			System.exit(0);
		}
 
 
 
	}
 
	// method outputItems
	public static void outputItems()
	{
		try
		{
		// Scanner for the input file
			Scanner inFile = new Scanner( new File("shoppinglist.txt"));
 
			System.out.println("\nYour shopping list contains:\n ");
 
			while( inFile.hasNextLine() )
 
				System.out.println( inFile.nextLine() );
 
			inFile.close();			// close the file
		}
		catch(IOException io)		// catch exception
		{
			// display the error message and exit program
			System.err.println("File read error occurred.");
			System.exit(0);
		}
 
	}
}

Open in new window

0
 
LVL 17

Assisted Solution

by:contactkarthi
contactkarthi earned 1000 total points
ID: 20347319
your code is fine

if you open with a wordpad you can see as you expect.. if you want to see them in notepad also use System.getProperty("line.separator") instead of "\n"

two lines in you code should look like

outFile.write(keyboard.nextLine() + System.getProperty("line.separator"));
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this post we will learn how to make Android Gesture Tutorial and give different functionality whenever a user Touch or Scroll android screen.
Basic understanding on "OO- Object Orientation" is needed for designing a logical solution to solve a problem. Basic OOAD is a prerequisite for a coder to ensure that they follow the basic design of OO. This would help developers to understand the b…
Viewers learn about the scanner class in this video and are introduced to receiving user input for their programs. Additionally, objects, conditional statements, and loops are used to help reinforce the concepts. Introduce Scanner class: Importing…
Viewers will learn how to properly install Eclipse with the necessary JDK, and will take a look at an introductory Java program. Download Eclipse installation zip file: Extract files from zip file: Download and install JDK 8: Open Eclipse and …
Suggested Courses

971 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question