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Thread: Passing an element from an array to a Method

  1. #1
    Junior Member
    Join Date
    Sep 2013
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    Question Passing an element from an array to a Method


    My code is supposed to validate each element of the array to ensure they are within the valid range (50-100).
    I can't seem to pass them to the Method.

    import java.util.Scanner;

    public class Method2 {

    public static void main(String[] args){
    Scanner input = new Scanner(System.in);
    final int NUMBER_OF_INTEGERS = 5;
    int[] numbers = new int[NUMBER_OF_INTEGERS]; //Create an array

    for(int i = 0; i <NUMBER_OF_INTEGERS; i++){
    System.out.println("Enter an integer (50-100): ");
    numbers[i] = input.nextInt();
    int isValid(i);

    public static int isValid(int n){
    int result;

    if(n <= 50 && n >= 100)
    System.out.println("**Invalid number ");
    result = n;

    return result;


  2. #2
    Member Kewish's Avatar
    Join Date
    Apr 2013
    Thanked 17 Times in 14 Posts

    Default Re: Passing an element from an array to a Method

    Please read the sticky post at the top of this subforum for the correct way to post your code. Announcements - What's Wrong With My Code?

    public static int isValid(int n)
    This returns an integer. Which you do here;
    return result;
    Great! Where are you storing that returned result??? There's problem #1

    Also, I think you may need to consider your steps again.
    Step 1 - Read Number
    Step 2 - Test Number
    Step 3 - Valid Number = Store It / Invalid Number alert user
    Step 4 - Repeat until array is filled with valid numbers.

    Also, are 50 and 100 valid entries or not?
    Why did you use && in the if statement. Can a number be both <= 50 AND >= 100 at the same time?
    You are passing the value of i into the method and testing that, is that the number you want to test if it is valid. What is the value of i for each iteration of the loop

    With a name like isValid, I feel it would be more natural to return a boolean result. But both ways can work.

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