How to replace dot (.) In string in Java

Question

I have a line called persons.name

I want to replace the DOT . on /*/ ie my output will be persons/*/name

I tried this code:

 String a="\\*\\"; str=xpath.replaceAll("\\.", a); 

I get a StringIndexOutOfBoundsException exception.

How to replace a point?

Answer 1

You need two backslashes before the point, one to avoid the slash so that it passes, and the other to avoid the point so that it becomes literal. Straight slashes and an asterisk are processed literally.

 str=xpath.replaceAll("\\.", "/*/"); //replaces a literal . with /*/ 

http://docs.oracle.com/javase/7/docs/api/java/lang/String.html#replaceAll(java.lang.String,%20java.lang.String)

Answer 2

Use Apache Commons Lang :

 String a= "\\*\\"; str = StringUtils.replace(xpath, ".", a); 

or with standalone JDK:

 String a = "\\*\\"; // or: String a = "/*/"; String replacement = Matcher.quoteReplacement(a); String searchString = Pattern.quote("."); String str = xpath.replaceAll(searchString, replacement);