Regex : Using Regex in Java 8

Question

I want to manipulate a String, my String are :

 String string = "dfwx--05-dfpixc3"

I want my output to be like :

dfwx--05
dfpixc3

So the separator is - and not --

moreover, can I solve this problem using Matcher class Pattern class ?

Answer 1

You can use split with this regex \b-\b with Word Boundaries like so :

\b represents an anchor like caret (it is similar to $ and ^) matching positions where one side is a word character (like \w) and the other side is not a word character (for instance it may be the beginning of the string or a space character).

String[] split = string.split("\\b-\\b");

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Because my String is variable There always a number after --

Another solution could be by using positive lookbehind, like so (?<=\d)- :

String[] split = string.split("(?<=\\d)-");

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Outputs

[dfwx--05, dfpixc3]