Replace backslash in string

Question

I have a String in which I am trying to replace the number enclosed by two backslashes. For example: \10\ , I am trying to replace that with 10. I am currently using this regex to do that:

String texter = texthb.replaceAll("\\.+\\", "\\"+String.valueOf(pertotal + initper)+"\\");

This line is giving the following error:

 Exception in thread "AWT-EventQueue-0" java.util.regex.PatternSyntaxException: Unexpected internal error near index 4

.+\

I know it is because the regex is wrong. What is the proper way to accomplish this? Thanks in advance.

if you just need to remove all back slashes, you can simply write texter = textbh.replace("\\", ""); — assylias
– assylias, Commented Jun 17, 2015 at 17:45

Avinash Raj · Accepted Answer · 2015-06-17 17:49:15Z

2

Use four backslashes to match a single backslash character.

String texter = texthb.replaceAll("\\\\.+?\\\\", "\\\\"+String.valueOf(pertotal + initper)+"\\\\");

edited Jun 17, 2015 at 17:49

answered Jun 17, 2015 at 17:43

Avinash Raj

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2 Comments

Waggoner_Keith Over a year ago

With that I get the error: java.lang.IllegalArgumentException: character to be escaped is missing

Waggoner_Keith Over a year ago

That works thanks so much. I will mark you as correct when it allows me.

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