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Thread: PLEASE HELP <--Beginner! project due @ midnight!

  1. #1

    Thread Starter
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    Mar 2012
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    Exclamation PLEASE HELP <--Beginner! project due @ midnight!

    Hi, to begin I am a complete novice so yes I know its not perfect by any means and criticism I appreciate but please don't be too hard on me So the assignment I would like to complete is specified here:
    a. Display your name to the screen and some info you get from the user’s computer and the date the program is executed. Use the same method you used for your previous assignment. (DONE)
    b. Ask user for the number of nonnegative whole numbers to be entered, create an array of that length, and then ask the user to enter the numbers one at a time. (DONE)
    c. Your program will store the numbers in an array. (DOnE i think!)

    d. If the input number is negative. (DONT KNOW/UNDERSTAND)
    • You ignore the number (do not accept it nor use it in your calculations)
    • You give user a warning that an illegal negative number has entered.
    • Go back to your loop and ask for another input.

    **so i have researched and give me a little break this is an online class so I have to figure it out on my own and I have found that maybe I should store the number in an array list?! but how ever if I do that that would therefore make what I have done pointless and have to redo it?! I just need some guidance and hopefully as soon as possible?! THANK YOU! this is what I have so far:

    package mystatisticsdemo;
    import java.util.*;
    /**
    *
    * @author Linette
    */
    public class MyStatisticsDemo {

    /**
    * @param args the command line arguments
    */
    public static void main(String[] args) {

    System.out.println("\t\t\t\tHello " + System.getProperty("user.name") + "!");
    String os = System.getProperty("os.name");
    String version = System.getProperty("os.version");
    System.out.println("\t\t I am running "+os+", version "+version);
    System.out.println("\tYour assignment was completed on " + (new Date()));

    System.out.println("\n\nPlease enter a non-negative whole number to "
    + "represent the length of your array:");

    boolean positiveEntry = false;
    Scanner keyboard = new Scanner(System.in);
    int arrayLength;

    do
    {
    arrayLength = keyboard.nextInt();
    if ((!(arrayLength == 0)) && (arrayLength > 0))
    {
    positiveEntry = true;
    int[] statsArray = new int[arrayLength];
    System.out.println("Your array will contain " + statsArray.length +
    " numeric entries. Input each one at a time below");
    for(int index = 0; index < statsArray.length; index++)
    statsArray[index] = keyboard.nextInt();
    }
    else
    System.out.println("Invalid entry, please enter a positive whole number:");
    }
    while (arrayLength <= 0);
    }
    }

  2. #2
    PowerPoster Nightwalker83's Avatar
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    Adelaide, Australia
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    Re: PLEASE HELP <--Beginner! project due @ midnight!

    Well to check whether a number is negative you might put something such as:

    Code:
    if (number < 0){
    
    }else{
    
    }
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