Split String Array using Regex - Java

Question

I'm using Java and I have a String array. I want to split each item of array into smaller elements using Regex (similar to the split method of string but instead of applying split to string I want to apply it to a specific item in an array). How do I do this?

For example, suppose I have an array of sentences in an array called "sentences". Now I want to split this into a multi dimensional array where the first index would contain an index of sentence and the second index would contain an index of individual words. In other words, I want to split each sentences using a space.

To illustrate, suppose I have a String array with two values - as follows:

sentence[0] = "This is sentence one";
sentence[1] = "This is sentence two";

Now I want to do two things here:

Create a multi dimensional array where index 1 contains sentence and where index two contains words
To do this I would need to split the sentence array. How would I do it to create multi dimensional array?

Your edit doesn't make things clearer. Do you want to split each String of a String[] on a space? — user1907906
– user1907906, Commented Aug 4, 2014 at 9:01

Icewind · Accepted Answer · 2014-08-04 09:09:57Z

1

List<String[]> words = new ArrayList<>(sentences.length);
for(String item : sentences)
    words.add(item.split(" "));

Or if you really want to use Arrays only:

String[][] words = new String[sentences.length][];
for(int i=0;i<sentences.length;i++)
    words[i] = sentences[i].split(" ");

edited Aug 4, 2014 at 9:09

answered Aug 4, 2014 at 8:58

Icewind

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score 0 · Accepted Answer · 2014-08-04 09:29:06Z

0

String[][] a = new String[sentences.length][];

for (int i = 0; i < sentence.length; i++) {
    String sentence = sentences[i];
    a[i] = sentence.split(" ");
}

edited Aug 4, 2014 at 9:29

answered Aug 4, 2014 at 9:02

user1907906

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