Printing array shows wrong output

Question

What is wrong with this code I\'m getting wrong output. I don\'t know what\'s wrong, I hope you could help me:

public class Main{
  public static void main(Strin         


        

Answer 1

data is an array of ints. You should use Arrays#toString(), which is implemented this way:

3860     public static String toString(int[] a) { {
3861        if (a == null)
3862            return "null";
3863        int iMax = a.length - 1;
3864        if (iMax == -1)
3865            return "[]";
3866
3867        StringBuilder b = new StringBuilder();
3868        b.append('[');
3869        for (int i = 0; ; i++) {
3870            b.append(a[i]);
3871            if (i == iMax)
3872                return b.append(']').toString();
3873            b.append(", ");
3874        }
3875    }

Make sure that you understand it, it will help you to understand arrays.

You can loop on the array and manually print it:

for(int i: data) {
    System.out.println(i + " ");
}

This way you have control on which values to print, e.g. even values:

for(int i: data) {
    if(i % 2 == 0) {
        System.out.println(i + " ");
    }
}

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Regarding the output you are getting, this is the explanation about it:

In Java, each object has toString() method, the default is displaying the class name representation, then adding @ and then the hashcode.