Regular Expression not matching in java replaceAll() method

Question

I have an input string -

f.dollar_sales,f.unit_sales

I want to use String.replaceAll(regex,regex) method to get an output string as follows:

dollar_sales,unit_sales

I used the following:

fieldList.replaceAll("[a-zA-Z]\\Q.\\E"," ");

where fieldList is String variable where I've stored input String.

Can someone point out where I've made a mistake?

So you are trying to replace f.dollar_sales with just dollar_sales? Right? — ryekayo
– ryekayo, Commented Apr 6, 2015 at 16:31
Will the input string always contain, f. before the values you want, or will it always be a [a-z].? Do you need regular expression for this or would a simple substring suffice? — Anthony Forloney
– Anthony Forloney, Commented Apr 6, 2015 at 16:31
this works for me.. System.out.println(string.replaceAll("[a-zA-Z]\\Q.\\E", "")); replace the match with an empty string not with a space. — Avinash Raj
– Avinash Raj, Commented Apr 6, 2015 at 16:31
Sorry -an extremely stupid mistake - I printed value of fieldList. Instead of storing output by replaceAll method. — Aarushi Mishra
– Aarushi Mishra, Commented Apr 6, 2015 at 16:37

hwnd · Accepted Answer · 2015-04-06 16:35:30Z

1

You need to assign your replaced string and \Q .. \E is not necessary here.

fieldList = fieldList.replaceAll("[a-zA-Z]\\.", "");

Ideone Demo

answered Apr 6, 2015 at 16:35

hwnd

70.9k4 gold badges100 silver badges135 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

anubhava Over a year ago

Yes this is the mistake OP is making +1

chandu kavar · Accepted Answer · 2015-04-06 16:36:52Z

1

String is immutable, so you need to assign the updated string to that variable.

please run the below code;

public class StringReplace {
    public static void main(String[] args){
        String fieldList="f.dollar_sales,f.unit_sales";
        fieldList=fieldList.replaceAll("[a-zA-Z]\\Q.\\E"," ");
        System.out.println(fieldList);
    }
}

answered Apr 6, 2015 at 16:36

chandu kavar

4201 gold badge4 silver badges13 bronze badges

Collectives™ on Stack Overflow

Regular Expression not matching in java replaceAll() method

2 Answers 2

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related