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javastringsplit
Abubakkar
Abubakkar

Reputation: 15664

Why String.split("$") doesn't work?

I have three part string with each part seperated by $ symbol
For example, 

String s = "abc$efg$xyz";

Now when I split it using split method like this: 

String values[] = s.split("$");

It values array contains that entire string as a single element.

But when I use this: 

String values[]=s.split("\\$");

It perfectly works what I wanted meaning
now the values array contains abc,efg and xyz on index 0,1 and 2 respectively.

I was wondering why that first split didn't work as I used similar split when splitting on a single white space using split(" ");

Upvotes: 1

Views: 3302

Answers (3)

Abhishekkumar
Abhishekkumar

Reputation: 1102

$ shown in your example is in a regex means end of string used in regular expression in java

it is used for

$   Checks if a line end follows

thus you hava to use \\

Upvotes: 0

alestanis
alestanis

Reputation: 21863

Because the character $ is a reserved token used in regular expressions to mark the end of a line. That's why you have to escape it using \\.

Upvotes: 13

SLaks
SLaks

Reputation: 887837

String.split takes a regular expression.

$ in a regex means the nd of the string, so you need to escape it if you want to match a literal $ character.

Upvotes: 7

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