String[] args values into a single string

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A method to reverse effect of java String.split()?

How do I take all the values within String[] args and make it into a single String variable?

There are *many* other Q/A's that deal with this; e.g. http://stackoverflow.com/questions/1978933/a-quick-and-easy-way-to-join-array-elements-with-a-separator-the-oposite-of-spl http://stackoverflow.com/questions/5283444/convert-array-of-strings-into-a-string-in-java and so on. — Stephen C, Apr 25 '12 at 03:17

score 3 · Answer 1 · answered Apr 25 '12 at 02:46

3

Iterate over the array
concatenate the strings together

Note: it's more efficient to use a StringBuilder object, but this is a simpler example:

public String concat(String[] args) {
  String result = ""
  for (String arg : args) {
    result += arg;
  }
  return result;
}

answered Apr 25 '12 at 02:46

Ben Taitelbaum

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What if i wanted to remove say the first 3 values defined within the args? So start from the 4 arg and then on – user372671 Apr 25 '12 at 02:49
Use `for(i = 3; i < args.length; i++)` instead of the colon syntax. – Tim Pote Apr 25 '12 at 02:53
Or you could use Apache Commons `ArrayUtils.subarray`. – Tim Pote Apr 25 '12 at 02:56
for(i = 3; i < args.length; i++) doesnt seem to be working right with me. any idea? – user372671 Apr 25 '12 at 03:06
for(int i=3;i – Dawood ibn Kareem Apr 25 '12 at 03:12
@user372671 See my updated answer for an alternative solution. – Tim Pote Apr 25 '12 at 03:14

Tim Pote · Accepted Answer · 2012-04-25T03:13:18.853

3

I prefer Apache Commons StringUtils. StringUtils.join(Object[] array, String separator) will join all the objects in the array with the given separator.

If you want a subarray of your current array (e.g. skip the first three elements), use this:

StringUtils.join(ArrayUtils.subarray(myArray, 3, myArray.length), ",");

edited Apr 25 '12 at 03:13

answered Apr 25 '12 at 02:47

Tim Pote

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score 0 · Answer 3 · answered Apr 25 '12 at 02:49

0

You can override toString() method and within this method, you can implement by doing loop through the String array and return the concatenated string in the format that you want.

answered Apr 25 '12 at 02:49

Jasonw

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String[] args values into a single string

3 Answers3