CODEWITHSUNDEEP
java
Dipesh Gandhi
Dipesh Gandhi

Reputation: 765

how to Split String By \ in java

I am having problem to split string in java. it gives java.util.regex.Pattern.error.

 String name = One\Two\Three.
 String[] str = name.split("\\");
 for(int i =0; i < str.length ; i++)
    System.out.println(str[i]);

I put another \ as escape character but not working.

help me.

Upvotes: 0

Views: 243

Answers (4)

CocheLee
CocheLee

Reputation: 121

If you want to test your pattern you should use this tool:

http://www.cis.upenn.edu/~matuszek/General/RegexTester/regex-tester.html

You cant write your test String there and your test Pattern and it can call the methods matches(), lookingAt(), find() and reset(). Also it translates your pattern to Java code (escaping the backslashes and such).

Upvotes: 0

Niklas B.
Niklas B.

Reputation: 95308

One\Two\Three is not a valid string literal (you need quotes and you need to escape the backslashes).

String name = "One\\Two\\Three.";
String[] str = name.split("\\\\");
for(int i =0; i < str.length ; i++)
   System.out.println(str[i]);

works fine.

Explanation

String#split expects a regular expression. The backslash character has a special meaning inside regular expressions, so you need to escape it by using another backslash: \\ Now because the backslash character also has a special meaning inside Java string literals, you have to double each of these again, resulting in "\\\\".

Upvotes: 7

npinti
npinti

Reputation: 52185

You need to escape it twice:

 String name = "One\\Two\\Three."
 String[] str = name.split("\\\\");
 for(int i =0; i < str.length ; i++)
    System.out.println(str[i]);

Upvotes: 0

Siva Arunachalam
Siva Arunachalam

Reputation: 7740

You have missed the quotes

String name = "One\\Two\\Three".

Upvotes: 1

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