java - How to split a string, including punctuation marks? -

i need split string (in java) punctuation marks being stored in same array words:

string sentence = "in preceding examples, classes derived from..."; string[] split = sentence.split(" "); 

i need split array be:

split[0] - "in" split[1] - "the" split[2] - "preceding" split[3] - "examples" split[4] - "," split[5] - "classes" split[6] - "derived" split[7] - "from" split[8] - "..." 

is there elegant solution?

you need arounds:

string[] split = sentence.split(" ?(?<!\\g)((?<=[^\\p{punct}])(?=\\p{punct})|\\b) ?"); 

look arounds assert, (importantly here) don't consume input when matching.

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some test code:

string sentence = "foo bar, baz! who? me..."; string[] split = sentence.split(" ?(?<!\\g)((?<=[^\\p{punct}])(?=\\p{punct})|\\b) ?"); arrays.stream(split).foreach(system.out::println); 

output;

foo bar , baz ! ? me ...