Taking numeric (integer) input from user and inserting it in an array in Java

Question

I also want to compare the max number but I am having problems with inserting it in an array - it gives the error:

java.lang.ArrayIndexOutOfBoundsException

Whenever I insert a value larger than 5.

import java.util.Scanner;
public class LargestValue 
{
    public static void main(String[] args) 
    {
        Scanner sc= new Scanner (System.in);
        int a[] = new int[5];

        System.out.println ("Enter 5 numbers for comparison ");

        for (int j = 0; j < a.length; j++)
        {
            int inputNumber = sc.nextInt();
            a[inputNumber] = inputNumber;
            System.out.println(inputNumber);
        }
    }
}

You meant to use a[j] = inputNumber; instead of a[inputNumber] = inputNumber; — SomeJavaGuy
– SomeJavaGuy, Commented Jul 27, 2015 at 8:59

Eran · Accepted Answer · 2015-07-27 08:59:04Z

2

You should assign the inputs to the j'th position of the array, not to the inputNumber position :

a[j] = inputNumber;

answered Jul 27, 2015 at 8:59

Eran

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Comments

JoGe · Accepted Answer · 2015-07-27 09:09:48Z

0

First error is already postet a[j] = inputNumber;

To compare the array you can use Arrays.sort(a);

Arrays.sort(int): Sorts the specified array into ascending numerical order.

To get the max value you can use Arrays.stream(a).max().getAsInt();

answered Jul 27, 2015 at 9:09

JoGe

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