How to print the entire array list without appending the index in Java?

Question

I'm a rookie in Java. I just started it a day before. I don't know whether its a stupid question. Whatever , when i run the below codes , I got

[I@15db9742 as output.

public class array1 {
    public static void main(String[] args)
    {   
        int[] arr={1,2,3};
        System.out.println(arr);
    }
}

what does it mean ? When i create a char array as

char[] c={'a','b','c'};

i got the output as abc

System.out.println(c);

Why i didn't get the o/p as 123 in the above case... Eager to hear the answer...................

Were you able to resolve this? – Perdomoff Mar 08 '16 at 21:09 — Perdomoff, Mar 08 '16 at 21:09

score 0 · Answer 1 · answered Mar 08 '16 at 18:16

0

You are printing the array object directly. Hence you are seeing the String representation of object and not its content. Probably you want to do

System.out.println(Arrays.toString(arr));

answered Mar 08 '16 at 18:16

Suresh Atta

Thanks for the reply. But I'm getting an error i.e Arrays cannot be resolved. – BabyboB Mar 08 '16 at 18:24
You ned to import Array class. `import java.util.Arrays;` – Suresh Atta Mar 08 '16 at 18:25
Thanks man . I forgot to import the java.util.Arrays package. – BabyboB Mar 08 '16 at 18:30
why it brings the output within the square bracket as [1,2,3]. How to remove those brackets ? – BabyboB Mar 08 '16 at 18:36

score 0 · Answer 2 · answered Mar 08 '16 at 18:17

0

You are printing the array wrongly.. do either

int[] arr={1,2,3};
         for (int i : arr) {
            System.out.println(i);

        }

or print it using the Arrays class

System.out.println(Arrays.toString(arr));

answered Mar 08 '16 at 18:17

I got the o/p as [1, 2, 3]. But how to remove those square brackets? – BabyboB Mar 08 '16 at 18:40
then do the for loop... because the [ ... ] are to indicate that it is an array – ΦXocę 웃 Пepeúpa ツ Mar 08 '16 at 18:45

Perdomoff · Answer 3 · 2016-03-08T20:57:09.307

0

Following up on my comment. You want to print the content:

for(int i = 0; i< arr.length; i++){

System.out.println(arr[i]);
}

edited Mar 08 '16 at 20:57

answered Mar 08 '16 at 18:17

Perdomoff

3 Answers3