[RESOLVED] Student needs help with Scanner

[mbutler755]

I am creating a program for my school. The program is supposed to get input from the user and print it out in a formatted way. However, I am having a problem. After my second loop through my methods two of the methods end up on the same line. Take a look at my code and then the ouput it produces. Please tell me what I am doing wrong.

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package invprogram;
import java.util.Scanner;
/**
 *
 * @author mbutler
 */
public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        //SOFTWARE programs;
       SOFTWARE programs=new SOFTWARE(null,null,null,0,0);

        //Display welcome message to user
        System.out.println("Welcome to the inventory program.");
        System.out.println("This program has been designed to");
        System.out.println("track computer software.");

        //Display whitespace
        System.out.println();
        System.out.println();

        //numRecrods is a variable that is set to ask the user how many
        //records he or she wants to set in that session
        int numRecords=0;

        //Setup the scanner for use
        Scanner input =new Scanner(System.in);

        //Ask the user how many records he or she wants to create
        //This information will be plugged into the array
        System.out.print("How many records would you like to add? ");
        numRecords=input.nextInt(); //prompt for how many records to add
        if (numRecords<=0)
        { //start if
            do  //Start do to ensure that a positive number is entered
            { //start do...while
                System.out.println("Number of records to add MUST be more than 0.");
                System.out.print("How many records would you like to add? ");
                numRecords=input.nextInt();
            } while (numRecords<=0);//end do...while
        } //end if

        //Create some whitespace
        System.out.println();
        System.out.printf("This program is going add %d record(s).\n", numRecords);

        //Create a string array to hold the item number
        String arrayItemNum[]=new String[numRecords];
        //Create a string array to hold the software title
        String arraySoftTitle[]=new String[numRecords];
        //Create a string array to hold the serial number
        String arraySerialNumber[]=new String[numRecords];
        //Create an int array to hold the qty on hand
        int arrayQty[]=new int[numRecords];
        //Create a double array to hold the price
        double arrayPrice[]=new double[numRecords];
        //Create a double array to hold the total of the software
        //Format: total=qty*price per unit
        double arrayTotal[]=new double[numRecords];
        //End of array creation
        
        int counter=0;
        while(counter!=numRecords)
        {
            System.out.printf("\ncounter=%d",counter);
            System.out.printf("\nnumRecords=%d\n", numRecords);
            programs.setItemNumber(arrayItemNum[counter]);
            programs.setSoftwareTitle(arraySoftTitle[counter]);
            programs.setSerialNumber(arraySerialNumber[counter]);
            programs.setNumberOfUnits(arrayQty[counter]);
            programs.setPricePerUnit(arrayPrice[counter]);
            //Output some white space
            System.out.println();
            System.out.println();
            //Output item number. Part 2 may work with hash codes if I can get
            //them to work Math.abs does not seem to spit out an absolute number
            //thus some hash codes are negatives
            System.out.printf("%s: %s\n","Item Number.....",programs.getItemNumber());
            //Output the software title
            System.out.printf("%s: %s\n","Software Title..",programs.getSoftwareTitle());
            //Output the serial number
            System.out.printf("%s: %s\n","Serial Number...",programs.getSerialNumber());
            //Output the number of units
            System.out.printf("%s: %s\n","Qty on hand.....",programs.getNumberOfUnits());
            //Output the price per unit
            System.out.printf("%s: %2s\n","Price per Unit..",programs.getPricePerUnit());
            //Figure out how to calculate total value using the array
            //System.out.printf("%s: %s\n","Total Value.....",arrayTotal[counter]);
            //Make output look like a spreadsheet for Part 2
            counter=counter+1;
            //counter=counter+1;
        }



        
    } //end public main

} //end class main
class SOFTWARE
{ //start of class SOFTWARE
    //Declare variables for the program
    //itemNumber=Item Number
    //softwareTitle=Software title
    //serialNumber=Serial Number
    //numberOfUnits=Quantity on hand
    //pricePerUnit=Price per unit
    //totalOfUnits=Total cost of all units
    //totalOfInventory=Total amount of all items in inventory
    private String itemNumber=null;
    private String softwareTitle=null;
    private String serialNumber=null;
    private int numberOfUnits=0;
    private double pricePerUnit=0.0;
    private double totalOfUnits=0.0;
    private double totalOfInventory=0.0;

    //Import scanner for use
    Scanner input =new Scanner(System.in);


    //Setup 5 item constructor for use
    public SOFTWARE(String itemNum, String title, String sn, int numUnits, double ppUnit)
    { //start of constructor
        itemNumber=itemNum;
        softwareTitle=title;
        serialNumber=sn;
        numberOfUnits=numUnits;
        pricePerUnit=ppUnit;
    } //end constructor

    //Start of methods
    //Methods to set things
    public void setItemNumber(String itemNum)
    { //start setItemNumber
        //System.out.println();
        System.out.print("Enter the item number you would like to use: ");
        itemNum=input.nextLine();
        itemNumber=itemNum;
    } //end setItemNumber

    public void setSoftwareTitle(String title)
    { //start setSoftwareTitle
        System.out.print("Enter the software title: ");
        title=input.nextLine();
        softwareTitle=title;
    } //end setSoftwareTitle

    public void setSerialNumber(String sn)
    { //start setSerialNumber
        System.out.print("Enter the serial number: ");
        sn=input.nextLine();
        serialNumber=sn;
    } //end setSerialNumber

    public void setNumberOfUnits(int numUnits)
    { //start setNumberOfUnits
        System.out.print("Enter the quantity to inventory: ");
        numUnits=input.nextInt();
        numberOfUnits=numUnits;
    } //end setNumberOfUnits

    public void setPricePerUnit(double ppUnit)
    { //start SetPricePerUnit
        System.out.print("Enter the price per unit: $");
        ppUnit=input.nextDouble();
        pricePerUnit=ppUnit;
    } //end SetPricePerUnit

    //Methods to get and return data
    public String getItemNumber()
    { //start of getItemNumber
        return itemNumber;
    } //end getItemNumber

    public String getSoftwareTitle()
    { //start of getSoftwareTitle
        return softwareTitle;
    } //end of getSoftwareTitle

    public String getSerialNumber()
    { //start of getSerialNumber
        return serialNumber;
    } //end of getSerialNumber

    public int getNumberOfUnits()
    { //start of getNumberOfUnits
        return numberOfUnits;
    } //end of getNumberOfUnits

    public double getPricePerUnit()
    { //start of getPricePerUnit
        return pricePerUnit;
    } //end of getPricePerUnit

    //public double calcTotalOfInventory()
    //{ //start of calcTotalOfInventory
    //
    //} //end of calcTotalOfInventory
} //end of class SOFTWARE

Output:
run:
Welcome to the inventory program.
This program has been designed to
track computer software.


How many records would you like to add? 2

This program is going add 2 record(s).

counter=0
numRecords=2
Enter the item number you would like to use: MSOFFICE2007
Enter the software title: Microsoft Office 2007
Enter the serial number: asdfd-qwerd-qwerd-qwetrd-qwetd
Enter the quantity to inventory: 50
Enter the price per unit: $200


Item Number.....: MSOFFICE2007
Software Title..: Microsoft Office 2007
Serial Number...: asdfd-qwerd-qwerd-qwetrd-qwetd
Qty on hand.....: 50
Price per Unit..: 200.0

counter=1
numRecords=2
Enter the item number you would like to use: Enter the software title: here's the problem
Enter the serial number: 346
Enter the quantity to inventory: 3
Enter the price per unit: $3


Item Number.....:
Software Title..: here's the problem
Serial Number...: 346
Qty on hand.....: 3
Price per Unit..: 3.0
BUILD SUCCESSFUL (total time: 1 minute 9 seconds)

[si_the_geek]

Thread moved from CodeBank forum (which is for you to post your code examples, not questions)

[ComputerJy]

I have no clear idea of what is causing the problem, but I found out that if you reconstruct the input scanner instance the problem is solved.

I guess this has to do with using the printf. Try looking it up in the Java Bugs DB or perhaps the Sun forums. If no one has mentioned this, try reporting it... You'll be student of the Year

[mbutler755]

So, the problem was with the scanner. I should not have been using

.nextLine()

. I am now using

.next()

and that is working perfectly.