how can i remove character '\' from a string?

Question

A string I retrieved from database contains \ which i need to remove.But as I put the replaceAll function it marks an error. Anyone got help please???

String I retrieved: Bebo\'b
String required: Bebo'b

I tried this function: str.replaceAll("\",""); marks an error where str is the retrieved string.

Vishnu Raj · Accepted Answer · 2014-01-08T07:07:46.740

4

use function str.replaceAll("\\'","'");

edited Jan 08 '14 at 07:07

answered Jan 08 '14 at 06:45

Vishnu Raj

566
1
4
14

He already tried and mentioned in his question. – Digital_Reality Jan 08 '14 at 06:49
@Digital_Reality Sorry its been edited. – Vishnu Raj Jan 08 '14 at 06:52
This is incorrect and will result in `PatternSyntaxException` – laalto Jan 08 '14 at 07:04
@crv str.replaceAll("\\",""); this is not work. – Amit kumar Jan 08 '14 at 07:05
Use this code of piece String aa=ss.replaceAll("'\'",""); – Amit kumar Jan 08 '14 at 07:06
@laalto: public class MainActivity extends Activity { String s="bb\'dfr"; TextView tx; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tx=(TextView)findViewById(R.id.txt); tx.setText(s.replaceAll("\\'", "'")); } } it worked for me..........whole code – Vishnu Raj Jan 08 '14 at 07:23

Shirwa Mohamed · Answer 2 · 2014-01-08T09:02:55.763

3

You should try the .replace("\", "") function. Otherwise you can try str.replaceAll("\'\", ""); using '\' as the escape sequence.

edited Jan 08 '14 at 09:02

answered Jan 08 '14 at 06:53

Shirwa Mohamed

191
1
9

1

Neither will work. First one will be a syntax error at compile time, second one will give `PatternSyntaxException` at runtime. – laalto Jan 08 '14 at 07:22
Oh I see the issue. Sorry about that. Check again. I have made edits. Use the second method. – Shirwa Mohamed Jan 08 '14 at 09:02

Satyaki Mukherjee · Answer 3 · 2014-01-08T07:41:29.603

2

Try this:

String result=str.replaceAll("\'\'", "");

Though "\" treated as escape sequence character so it's single "\" is not workable .

edited Jan 08 '14 at 07:41

answered Jan 08 '14 at 06:52

Satyaki Mukherjee

2,857
1
22
26

This will result in `PatternSyntaxException` – laalto Jan 08 '14 at 07:21
@laalto I have modified and it's workable. I have tested it. Thanks. I have done little mistakes. – Satyaki Mukherjee Jan 08 '14 at 07:42

score 2 · Answer 4 · answered Jan 08 '14 at 07:00

2

use this code.

String ss="Bebo\'b"; String aa=ss.replaceAll("'\'",""); tv.setText(aa);

answered Jan 08 '14 at 07:00

Amit kumar

1,585
2
16
27

score 2 · Answer 5 · edited May 23 '17 at 12:06

2

This is a delimeter collision problem. You ha ve to do;

str.replaceAll("\\\\","");

Here is another thread about it.

String replace a Backslash

edited May 23 '17 at 12:06

Community

1
1

answered Jan 08 '14 at 07:25

ilkayaktas

188
1
7

Hariharan · Answer 6 · 2014-01-08T06:57:40.653

1

Try this..

str.replaceAll("\\","");

Or

str.replaceAll(Pattern.quote("\\'"), "'")

edited Jan 08 '14 at 06:57

answered Jan 08 '14 at 06:50

Hariharan

24,741
6
50
54

score 0 · Answer 7 · answered Jan 08 '14 at 06:56

0

 public class XYZ {     
public static void main(String argss[])     {
        String p="123\' 5677fg\' ffd";
        System.out.println(p.replaceAll("/", ""));  }

}

try this

answered Jan 08 '14 at 06:56

DropAndTrap

1,538
16
24

he wants to replace backslash, not `/` – ShinTakezou Jan 08 '14 at 06:58
did u try this first try its working and getting desired output :) – DropAndTrap Jan 08 '14 at 07:15

score 0 · Answer 8 · answered Jan 08 '14 at 07:00

0

String str = "Bebo\\'b";
str.replaceAll("\\","");
System.out.println(str);

answered Jan 08 '14 at 07:00

learner

3,092
2
21
33

how can i remove character '\' from a string?

8 Answers8