CODEWITHSUNDEEP
javaregexstringsplittext-segmentation
PeakGen
PeakGen

Reputation: 23025

How to split paragraphs into sentences?

Please have a look at the following.

String[]sentenceHolder = titleAndBodyContainer.split("\n|\\.(?!\\d)|(?<!\\d)\\.");

This is how I tried to split a paragraph into sentences. But, there is a problem. My paragraph includes dates like Jan. 13, 2014, words like U.S and numbers like 2.2. They all got splitted by the above code. So basically, this code splits lot of 'dots' whether it is a full stop or not.

I tried String[]sentenceHolder = titleAndBodyContainer.split(".\n"); and String[]sentenceHolder = titleAndBodyContainer.split("\\."); as well. All failed.

How can I split a paragraph into sentences "properly"?

Upvotes: 8

Views: 19466

Answers (3)

Sathesh
Sathesh

Reputation: 39

String[] sentenceHolder = titleAndBodyContainer.split("(?i)(?<=[.?!])\\S+(?=[a-z])");

Try this it worked for me.

Upvotes: 1

Ruchira Gayan Ranaweera
Ruchira Gayan Ranaweera

Reputation: 35557

You can try this

String str = "This is how I tried to split a paragraph into a sentence. But, there is a problem. My paragraph includes dates like Jan.13, 2014 , words like U.S and numbers like 2.2. They all got split by the above code.";

Pattern re = Pattern.compile("[^.!?\\s][^.!?]*(?:[.!?](?!['\"]?\\s|$)[^.!?]*)*[.!?]?['\"]?(?=\\s|$)", Pattern.MULTILINE | Pattern.COMMENTS);
Matcher reMatcher = re.matcher(str);
while (reMatcher.find()) {
    System.out.println(reMatcher.group());
}

Output:

This is how I tried to split a paragraph into a sentence.
But, there is a problem.
My paragraph includes dates like Jan.13, 2014 , words like U.S and numbers like 2.2.
They all got split by the above code.

Upvotes: 19

Manas Kandekar
Manas Kandekar

Reputation: 1

This will split the paragraph by . ? !:

String a[]=str.split("\\.|\\?|\\!");

You can put any symbol after \\ which you want to use and use | to separate each condition.

Upvotes: 0

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