Java replace all non alphanumeric

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Deepak Kumar

Java replace all non alphanumeric
1 Answer(s) 6 years and 7 months ago
Posted in : Java Beginners

Hi,

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

Thanks

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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);
    }
}

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