CODEWITHSUNDEEP
javaregexstring
Sanjeev Yadav
Sanjeev Yadav

Reputation: 3031

Replacing wild character in java

I am trying to replace java wild character ? from string b.match(/?/g) with \|, using string replaceAll method. I have tried following regex 

1. /[\^?]/  
2. match[(][/][?][/]g[)]

Both regex work fine with tool but while running java code replaceAll method is not replacing string. Java might be considering ? as regex instead of string. Is there any way to solve the issue.

Upvotes: 1

Views: 434

Answers (1)

Akash Thakare
Akash Thakare

Reputation: 22992

Both regex work fine with tool but while running java code replaceAll method is not replacing string.

replaceAll method won't replace your actual String it will return new String which has replaced data.

String s="yourString";
s.replaceAll("a","b");//Won't Change your Actual String
String newReplaced=s.replaceAll("a","b")//For Example

Secondly You Need to use Escape Character \ as ? and | are special characters and reserved characters for regExp.

I am trying to replace java wild character ? from string b.match(/?/g) with \|,

Example:

System.out.println("Replace? Marks??".replaceAll("\\?","\\\\|"));

Will replace all ? with \|

Upvotes: 1

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