Echo Input using Arrays in Java

Question

I’m trying to code a simple Java program entering five integers through echo input while using arrays. All I should be able to do is enter five integers, and the program just displays a message preceded by the entered numbers. I would think that all I would need to add would be a correct array variable assignment, but I can’t find it. What does anyone suggest?

what I have so far

Does this answer your question? [How can I store user inputs in an array of integers?](https://stackoverflow.com/questions/59413887/how-can-i-store-user-inputs-in-an-array-of-integers) — smac2020, May 27 '21 at 00:33
There are multiple issue with your code, it would be better to first go through a tutorial to atleast understand the basics — lyncx, May 27 '21 at 00:44
[Read int from scanner](https://stackoverflow.com/a/2506109/2478398). [Using arrays](http://tutorials.jenkov.com/java/arrays.html). [Printing arrays](https://stackoverflow.com/a/409795/2478398). Read through those and you should be able to come up with your own answer (and see what's wrong with the code at the moment). — BeUndead, May 27 '21 at 00:58

score 0 · Answer 1 · answered May 27 '21 at 00:37

0

From what I saw in your code, you are trying to use a variable n that has not been declared, the correct one would not be num.length?

You can also use in.nextInt(); for integer values.

answered May 27 '21 at 00:37

Vinicius Lustosa

34
2

score 0 · Answer 2 · answered May 27 '21 at 07:28

Note:

n is not defined, perhaps you meant to use 5.
The array is defined in a C-style, define it like this: int[] arrayVariableName
num is an array, so it should be named nums.
To get an int from an input, you should call in.nextInt() and not in.next().
To print the contents of the array, you should first call Arrays.toString().

The fixed code:

public static void main(String[] args) {
    Scanner in = new Scanner(System.in);
    System.out.println("Enter 5 integers: ");

    int[] nums = new int[5];
    for (int i = 0; i < 5; i++) {
        nums[i] = in.nextInt();
    }

    System.out.println("You entered: " + Arrays.toString(nums));
}

Echo Input using Arrays in Java

2 Answers2