CODEWITHSUNDEEP
javaregexsplit
droidpiggy
droidpiggy

Reputation: 15

How to split this string in Java regex?

This is the string:

String strPro = "(a0(a1)(a2 and so on)...(aN))";

Content in a son-() may be "", or just the value of strPro, or like that pattern, recursively, so a sub-() is a sub-tree.

Expected result:

str1 is "a0(a1)"
str2 is "(a2 and so on)"
...
strN is "(aN)"

str1, str2, ..., strN are e.g. elements in an Array

How to split the string?

Upvotes: 1

Views: 401

Answers (1)

Keppil
Keppil

Reputation: 46209

You can use substring() to get rid of the outer paranthesis, and then split it using lookbehind and lookahead (?<= and ?=): 

String strPro = "(a0(a1)(a2 and so on)(aN))";
String[] split = strPro.substring(1, strPro.length() - 1).split("(?<=\\))(?=\\()");
System.out.println(Arrays.toString(split));

This prints

[a0(a1), (a2 and so on), (aN)]

Upvotes: 1

Related Questions