Java replace all non alphanumeric

Hi,

In Java how to replace all non alphanumeric characters with blank? Share me the best code for java replace all non alphanumeric.

Thanks

View Answers

March 29, 2011 at 11:36 AM

Hi,

You can use the replaceAll() function of String class in Java.

We will use the regular expression "[^a-zA-Z0-9]" for finding all non alphanumeric characters and then replace it with required character.

Following example show how to replace all non alphanumeric characters present in a Java String variable.

public class TestReplaceAllNonAlphanumeric 
{
    public static void main(String[] args) 
    {
    String s = "What is use of[]. What {} is used.";
    s = s.replaceAll("[^a-zA-Z0-9]", "");
    System.out.println(s);
    }
}

Thanks

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