How to delete only commas that appear because of Arrays.toString()

Question

Replacing square brackets is not a problem, but the problem is with replacing commas, replace(",", "") , because it does it with all commas in my table and i need to delete only those which appears because of Arrays.toString()

System.out.println( Arrays.toString( product ).replace("[", "").replace("]", "").replace(",", ""));

If there is no way of do that, maybe there are other ways to print my array, like string builder...etc? but i am not sure how to use it

If you don't like the output of `Arrays.toString()`, don't use it. Instead, use a loop. — SLaks, Dec 08 '13 at 13:27
[What's the best way to build a string of delimited items in Java?](http://stackoverflow.com/questions/63150/whats-the-best-way-to-build-a-string-of-delimited-items-in-java) — zapl, Dec 08 '13 at 13:31
well the lopp does not work.Each time using it, instead of reasult i get [LProduct;@24de1f47 [LProduct;@24de1f47 — user2970055, Dec 08 '13 at 13:31
Thats because you didnt override the toString() function in your objects class — Ben, Dec 08 '13 at 13:32

score 2 · Answer 1 · answered Dec 08 '13 at 13:33

Rather than using Arrays.toString, since you don't want the output it creates, use your own loop:

StringBuilder sb = new StringBuilder(400);
for (int i = 0; i < product.length; ++i) {
    sb.append(product[i].toString());
}
String result = sb.toString();

Note I'm using toString on your product entries; there may be a more appropriate choice depending on what those are.

If you want a delimiter (other than ,, obviously), just append it to the StringBuilder as you go:

StringBuilder sb = new StringBuilder(400);
for (int i = 0; i < product.length; ++i) {
    if (i > 0) {
        sb.append(yourDelimiter);
    }
    sb.append(product[i].toString());
}
String result = sb.toString();

score 1 · Answer 2 · answered Dec 08 '13 at 13:29

1

We dont know what your objects look like in your array, but you shouldnt use Arrays.toString if you dont like the output since its only a helper method to save you some time. Just iterate over your objects with a loop and print them.

answered Dec 08 '13 at 13:29

Ben

1,157
6
11

score 0 · Answer 3 · answered Dec 08 '13 at 14:10

0

There's a great library of apache where you can achieve your goal in one line of code: org.apache.commons.lang.StringUtils

String delimiter = " ";
StringUtils.join(array, delimiter);

answered Dec 08 '13 at 14:10

Lital Kolog

1,301
14
39

How to delete only commas that appear because of Arrays.toString()

3 Answers3