How can i replace { inside string in java

Question

Can anybody help me in replacing '{' inside string in java

For e.g.

String str = "abc{ad}";
str = str.replace("{","(");

But this seems to be not possible.

try str = str.replace("\{","(");

Android Killer
– Android Killer

2012-12-26 09:53:46 +00:00
Commented Dec 26, 2012 at 9:53 — Android Killer
– Android Killer, Commented Dec 26, 2012 at 9:53
replace replaces characters not Strings.

Peter Lawrey
– Peter Lawrey

2012-12-26 10:02:52 +00:00
Commented Dec 26, 2012 at 10:02 — Peter Lawrey
– Peter Lawrey, Commented Dec 26, 2012 at 10:02
What JDK version do you have?

KV Prajapati
– KV Prajapati

2012-12-26 10:09:01 +00:00
Commented Dec 26, 2012 at 10:09 — KV Prajapati
– KV Prajapati, Commented Dec 26, 2012 at 10:09

amit · Accepted Answer · 2012-12-26 10:11:09Z

5

String#replace(char,char) does it and fits for one character. All you have to do is switch your replace() invokation to:

str = str.replace('{','(');
 //               ^ ^ ^ ^
 //             not the ' instead of "

However, String in java is immutable so you cannot change it¹, you can only generate a new string object with these properties.

_{(1) not easily anyway, can be done with reflection API, but it is unadvised.}

edited Dec 26, 2012 at 10:11

answered Dec 26, 2012 at 10:00

amit

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2 Comments

JB Nizet Over a year ago

I would remove the note about reflection. It just adds noise, IMO, and could make the reader think that it would be a wise thing to modify a string using reflection.

amit Over a year ago

@JBNizet: I see your point, but claiming "it cannot be done" is wrong without this clarification, I subbed it to generate less noise, I would also appritiate any edit that one may think explains it is should be avoided better.

PermGenError · Accepted Answer · 2012-12-26 09:52:46Z

2

{ and ( are meteacharacters in java, you should escape them with backslash . and String.replace doesn't use regex, use [String.replaceAll][1] or String.replaceFirst instead

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

answered Dec 26, 2012 at 9:52

PermGenError

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Comments

NPKR · Accepted Answer · 2012-12-26 10:01:30Z

0

This will work for

String strAll = "abc{ad}";
strAll = strAll.replaceAll("\\{","(");

answered Dec 26, 2012 at 10:01

NPKR

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