java split () method with two delimiters

Question

I have a string like

abababa:nsndnfnng.leleelld_kdjdh

I want to split it on ":" and ".", so that I get a list as follows:

{abababa, nsndnfnng, eleelld_kdjdh}

how can I do this with calling the split() once?

Just call the split() on the string 2 times, once on the original string, and then on the sub-strings generated from the first step. — rgamber, Apr 05 '16 at 18:47

score 8 · Answer 1 · answered Apr 05 '16 at 18:48

8

You are looking for String#split method. Since it accepts regex which will describe delimiter your code could look like

String[] result = yourString.split("[:.]");

answered Apr 05 '16 at 18:48

Pshemo

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gustf · Answer 2 · 2016-04-05T19:08:43.693

1

You can just use String.split("[:.]") which takes a regex argument

Common pitfall If you would only want to split on . alone you have to escape the dot String.split("\\.") (or use a character class here too String.split("[.]"))

edited Apr 05 '16 at 19:08

answered Apr 05 '16 at 18:49

gustf

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`:` and `.` are not special in character class. There is no need to escape them there. – Pshemo Apr 05 '16 at 18:49
"Note that the dot . *needs* to be escaped." that would be true if `.` would not be inside `[...]`. Most regex metacharacters have no special meaning in character class because its purpose is to represent single characters, which means we can even write `[+/:*()]` and it will represent single `+` `/` `:` `*` `(` or `)` characters. Same about `[.]`. You can find more info here: http://www.regular-expressions.info/charclass.html#special – Pshemo Apr 05 '16 at 18:57
You are right since they are within a *Character class*, did not think about that – gustf Apr 05 '16 at 18:58
1

If you agree that "Note that the dot . needs to be escaped" is not right (as `.` is placed in `[..]`) feel free to remove that part from your answer as it is incorrect. – Pshemo Apr 05 '16 at 19:00

score 0 · Answer 3 · answered Apr 05 '16 at 18:51

use regex and split the string

Example:

public static void main(String[] args) {
    String REGEX_PATTERN = "[:.\\_]";
    String s1 = "abababa:nsndnfnng.leleelld_kdjdh";
    String[] result = s1.split(REGEX_PATTERN);
    for (String myString : result) {
        System.out.println(myString);
    }
}

java split () method with two delimiters

3 Answers3