Paked - How to remove all special characters from a String in Java?

How to remove all special characters from a String in Java?

You will need to understand regular expressions in order to remove the unwanted characters. You can use [^A-Za-z] to allow only characters to appear in a string. Furthermore, you can use replaceAll method to replace or remove all unwanted characters from a string (see http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html#replaceAll(java.lang.String,%20java.lang.String).

Example:

str.replaceAll("[^A-Za-z]","");

To learn more about regular expression see the following links:

http://java.sun.com/j2se/1.4.2/docs/api/java/util/regex/Pattern.html

http://java.sun.com/docs/books/tutorial/essential/regex/

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