Array of Strings to String without using for loop

Question

How to convert String[] to String in Java without using for loop ?

I know how to convert using for loop but I want to convert it without using any loop (for or while).

Already discussed here: http://stackoverflow.com/questions/5283444/convert-array-of-strings-into-a-string-in-java — drgPP, May 21 '15 at 07:21
Why do you not want to use a loop? Loops are a fundamental part of Java. Your question doesn't make much sense. — Erwin Bolwidt, May 21 '15 at 07:35
@ErwinBolwidt i guess is some kind of educational excercise or homework... — Jordi Castilla, May 21 '15 at 07:48

score 3 · Answer 1 · answered May 21 '15 at 07:21

Returns a string representation of the contents of the specified array. If the array contains other arrays as elements, they are converted to strings by the Object.toString() method inherited from Object, which describes their identities rather than their contents.

score 0 · Answer 2 · answered May 21 '15 at 07:24

0

Arrays.toString()

Example

String[] arr = new String[2];
arr[0] = "Str 1"; arr[1] = "Str 2";
System.out.println(Arrays.toString(arr));

answered May 21 '15 at 07:24

Soumitri Pattnaik

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score 0 · Answer 3 · answered May 21 '15 at 07:26

You can use Arrays.toString() form Doc

Returns a string representation of the contents of the specified array. If the array contains other arrays as elements, they are converted to strings by the Object.toString() method inherited from Object, which describes their identities rather than their contents.
The value returned by this method is equal to the value that would be returned by Arrays.asList(a).toString(), unless a is null, in which case "null" is returned.

But you you see the code it also uses the loop:

StringBuilder b = new StringBuilder();
b.append('[');
for (int i = 0; ; i++) {
   b.append(String.valueOf(a[i]));
   if (i == iMax)
      return b.append(']').toString();
   b.append(", ");
}

Array of Strings to String without using for loop

3 Answers3