CODEWITHSUNDEEP
javaspecial-characters
Akhila
Akhila

Reputation: 61

How to replace '{Name}' in java

I need to replace a value in a string like {Name} with values.
How can we replace the special character { and }?
I have tried this:

str.replaceAll("{Name}","A");

But this doesnt work if we have special characters.

Upvotes: 5

Views: 2333

Answers (2)

T.J. Crowder
T.J. Crowder

Reputation: 1074565

Use replace rather than replaceAll, since replace doesn't expect and parse a regular expression.

Example: (live copy)

String str = "Here it is: {Name} And again: {Name}";
System.out.println("Before: " + str);
str = str.replace("{Name}","A");
System.out.println("After: " + str);

Output:

Before: Here it is: {Name} And again: {Name}
After: Here it is: A And again: A

Upvotes: 14

npinti
npinti

Reputation: 52185

As per the JavaDoc, the .replaceAll(String regex, String replacement) method takes in a regular expression as the first parameter.

It so happens that { and } have special meaning in regular expression syntax and thus need to be escaped. Try using str.replaceAll("\\{Name\\}","A");.

The extra \ in front instructs the regular expression engine to threat the { and } as actual characters (without their special meaning). Since this is Java, you need to also escape the \ character which is why you need two of them.

Upvotes: 12

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