Does not print all elements in Array

Question

Hello I'm trying to get my array "numbers" to print out all even numbers for some reason I can't get it to call the array from earlier in my code so that the array can be used down below.

 import java.util.Random;

public class Main {
  public static void main(String [] args){
      int numbers[] = new int [10];
      for (int x = 0; x < numbers.length; x++){
      Random rand = new Random();
      numbers[x] = rand.nextInt(100)+1;
      System.out.print("" + numbers[x] + " ");
      }
    System.out.println("");
    System.out.print("The values at even indexes are: " + numbers[0] + " " + numbers[2] + " " + numbers[4] + " " + numbers[6] + " " + numbers[8]);
    System.out.println("");
    if(numbers[x] % 2 == 0){
      System.out.print(numbers[x]);
    }
  }
}

Arrays don't get "called". You simply need to re-loop through the array in another for loop. — Hovercraft Full Of Eels, Mar 29 '17 at 00:53
You can't use `x` outside the for loop. It is out of scope. You probably want this inside a loop anyway, to print all the even values, so you just need to wrap this inside a new for loop with `x` as the iterator. — RaminS, Mar 29 '17 at 00:53
Possible duplicate of [How to find index of int array in Java from a given value?](http://stackoverflow.com/questions/6171663/how-to-find-index-of-int-array-in-java-from-a-given-value) — Kindle Q, Mar 29 '17 at 06:28
Welcome to StackOverflow! Questions seeking debugging help ("why isn't this code working?") must include the desired behavior, a specific problem or error and the shortest code necessary to reproduce it in the question itself. Questions without a clear problem statement are not useful to other readers. See: [How to create a Minimal, Complete, and Verifiable example](https://stackoverflow.com/help/mcve). — naXa stands with Ukraine, Mar 29 '17 at 07:04

Oghli · Accepted Answer · 2017-03-29T00:56:33.910

1

your problem that you put if(numbers[x] % 2 == 0) outside for loop so you can't iterate over array by index x:

for (int x = 0; x < numbers.length; x++){
    if(numbers[x] % 2 == 0){
      System.out.print(numbers[x]);
    }
}

edited Mar 29 '17 at 00:56

answered Mar 29 '17 at 00:55

Oghli

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Will that keep the same values within the array? – Matthew M Mar 29 '17 at 00:56
yes the exact same values try it – Oghli Mar 29 '17 at 00:57
It's giving me a line of output and repeating itself a lot how do I get one smooth answer. – Matthew M Mar 29 '17 at 01:03
just put `System.out.println(numbers[x]);` to print each value on seperate line – Oghli Mar 29 '17 at 01:05
or put `System.out.print(numbers[x] + " ");` to separate output with spaces in same line. – Oghli Mar 29 '17 at 01:06
That may have done it. seems to be working at least thank you so much. – Matthew M Mar 29 '17 at 01:08
your welcome! hope it worked as expected. – Oghli Mar 29 '17 at 01:09
accept the answer if you find it helpful. – Oghli Mar 29 '17 at 01:14
I up voted it doesn't count cause my rep is so low. – Matthew M Mar 29 '17 at 01:16
however I'm trying to print the array as it is on a line then list values at even indexes on the next line then even numbers within the array on another line, my output is getting squished together on the same lines.. how do I get it to skip lines? – Matthew M Mar 29 '17 at 01:18
your right but if any answer solve your problem you can accept it by pressing correct button despite your rep . – Oghli Mar 29 '17 at 01:19
oh I see now, sorry I'm new around here. – Matthew M Mar 29 '17 at 01:23
you can print indexes and values of even numbers in `System.out.println(x + " " + numbers[x]);` – Oghli Mar 29 '17 at 01:23
I'm not having an issue getting the values it's when the output shows it's all disordered and I can't seem to get them categorized – Matthew M Mar 29 '17 at 01:23
check this program i organized your output as you want : https://ideone.com/RQp9TA – Oghli Mar 29 '17 at 01:28
1

I was playing around with it and yes you nailed it exactly... My mistake was I was doing it all under one for loop instead of calling it again... Thank you so much Mohammad you've really helped me learn a lot. – Matthew M Mar 29 '17 at 01:35

Does not print all elements in Array

1 Answers1