Replace the $ symbol in String

Question

How to replace all "$$$" present in a String?

I tried

story.replaceAll("$$$","\n")

This displays a warning: Anchor $ in unexpected position and the code fails to work. The code takes the "$" symbol as an anchor for a regular expression. I just need to replace that symbol.

Is there any way to do this?

`story.replaceAll("\\$\\$\\$","\n")` – Elliott Frisch Apr 26 '19 at 05:38 — Elliott Frisch, Apr 26 '19 at 05:38
replaceAll is for replacing regex. try using `replace` – Scary Wombat Apr 26 '19 at 05:39 — Scary Wombat, Apr 26 '19 at 05:39
`$` means the end of the `String` – Scary Wombat Apr 26 '19 at 05:40 — Scary Wombat, Apr 26 '19 at 05:40

score 2 · Answer 1 · answered Apr 26 '19 at 05:42

2

"$" is a special character for regular expressions.

Try the following:

    System.out.println(story.replaceAll("\\$\\$\\$", "\n"));

We are escaping the "$" character with a '\' in the above code.

answered Apr 26 '19 at 05:42

Dakshinamurthy Karra

5,353
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If you base your answer on a comment - at the very least mention the comment writer - https://stackoverflow.com/users/2970947/elliott-frisch – Rann Lifshitz Apr 26 '19 at 05:46
It wasn't and I didn't see the comments before answering. – Dakshinamurthy Karra Apr 26 '19 at 05:49
I suggest you take a look in the future. Its the first comment on the OP (and the comment was posted before your answer) – Rann Lifshitz Apr 26 '19 at 05:55

score 2 · Answer 2 · answered Apr 26 '19 at 05:47

There are several ways you can do this. It depends on what you want to do, and how elegant your solution is:

String replacement = "\n"; // The replacement string

// The first way: 
story.replaceAll("[$]{3}", replacement);

// Second way:
story.replaceAll("\\${3}", replacement);

// Third way:
story.replaceAll("\\$\\$\\$", replacement);

score 1 · Answer 3 · answered Apr 26 '19 at 05:42

You can replace any special characters (Regular Expression-wise) by escaping that character with a backslash. Since Java-literals use the backslash as escaping-character too, you need to escape the backslash itself.

story.replaceAll("\\${3}", something);

By using {3}behind the $, you say, that it should be found exactly three times. Looks a bit more elegant than "\\$\\$\\$". something is thus your replacement, for example "" or \n, depending on what you want.

score 0 · Answer 4 · answered Apr 26 '19 at 05:46

0

this will surely work..

story.replaceAll("\\$\\$\\$","\n")

YOu can do this for any special character.

answered Apr 26 '19 at 05:46

SRK

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This answer was already provided both in the OP comments and as an actual answer before yours...... – Rann Lifshitz Apr 26 '19 at 05:48
@RannLifshitz ,I had typed that answer already and was doing some work and then I submitted.. so it got delayed. :-) – SRK Apr 26 '19 at 05:51

Replace the $ symbol in String

4 Answers4