How do I split a string, without spaces, into multiple words in java?

Question

I have a String array

String student [] = {"BAT4M0ABBB4M0ABOH4M0CCHI4U0AENG4U0DMDM4U0B"}

I need to split this for every 7 characters. It should look like this:

String student {
"BAT4M0A",
"BBB4M0A",
"BOH4M0C",
"CHI4U0A",
"ENG4U0D",
"MDM4U0B"
}

This is my code so far.

       for (int i=0; i<= data.length; i++)
        {
          student= data[i].split(","); //data is a file of 1000 lines that is being read
          if (student [2].equals(sN)) //student is a line in the each file that has been  split into 11 parts
        {
            String timetable[]= student[9].split("(?<=\\G.......)");
            System.out.println (timetable);
            break;
        }

Plz see a similar thread http://stackoverflow.com/questions/12295711/split-a-string-at-every-nth-position — Vivek Vermani, Jan 12 '14 at 23:20

Reimeus · Accepted Answer · 2014-01-13T00:36:32.927

6

You could do

String[] array = student[0].split("(?<=\\G.{7})");

\G is a meta character that matches the last match so (?<=\\G.{7}) matches an empty string followed by any 7 characters

IDEOne Demo

edited Jan 13 '14 at 00:36

answered Jan 12 '14 at 23:19

Reimeus

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4

Can you please add an explanation of the regex? – Sotirios Delimanolis Jan 12 '14 at 23:22
yeh I would like to see it too – Алексей Jan 12 '14 at 23:23
I had to put up a different question because I forgot that this string already exists in an array. – user3161311 Jan 12 '14 at 23:54
Given that you only have [one element in the array](http://stackoverflow.com/questions/21081845/how-can-i-split-a-string-array-which-contains-no-spaces-into-multiple-words-in), there's no reason why this wont still work – Reimeus Jan 12 '14 at 23:59
So do I add student[9].split ... instead of str.split... ? – user3161311 Jan 13 '14 at 00:07
What is `student` exactly? You need to update the question. If the question is _significantly_ different then open a new question with your code and explain the issue :) – Reimeus Jan 13 '14 at 00:12
I'm sorry for not specifying, please see my updated question. – user3161311 Jan 13 '14 at 00:22
that's way better, see update. Also have tidied question formatting :) – Reimeus Jan 13 '14 at 00:25
It is giving me an error. :( Is there a way I can send you my program to see what's wrong? – user3161311 Jan 13 '14 at 00:33
No, `SO` is a Q&A site. we dont do consultations. Have a look at the demo added, it has everything you need and more ;) – Reimeus Jan 13 '14 at 00:41
I have entered my code. Please see the changes. Sorry again for not being specific. This is my first question. – user3161311 Jan 13 '14 at 00:48

score 2 · Answer 2 · answered Jan 12 '14 at 23:21

2

You can use guava Splitter:

String str = "BAT4M0ABBB4M0ABOH4M0CCHI4U0AENG4U0DMDM4U0B"
Iterable<String> parts = Splitter.fixedLength(7).split(str);

answered Jan 12 '14 at 23:21

Алексей

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Robin Dijkhof · Answer 3 · 2014-01-12T23:23:39.237

0

use string.substring(i,j); i is the first character and j is the last character. It's easy to create a loop that goes through the whole string

edited Jan 12 '14 at 23:23

answered Jan 12 '14 at 23:18

Robin Dijkhof

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How do I split a string, without spaces, into multiple words in java?

3 Answers3