Remove All Special Character from String in Java

By Atul Rai | Last Updated: May 15, 2023 Previous       Next

In Java, to remove all special character form a given string, we can use the replaceAll(String regex, String replacement) method of String class. replaceAll(regex, replacement) replaces each substring of this string that matches the given regular expression with the given replacement.

Have a look on below example:

package org.websparrow;

public class RemoveSpecialCharacters {

    public static void main(String[] args) {

        String str = "!W@eb#s$pa%rr*,o:w";

        String finalStr = str.replaceAll("[^0-9a-zA-Z]", "");

        System.out.println("Original string: " + str);
        System.out.println("Final string: " + finalStr);
    }
}

Note: The regular expression [^0-9a-zA-Z] matches any character that is not a letter(uppercase or lowercase) or a number.

Output:

Original string: !W@eb#s$pa%rr*,o:w
Final string: Websparrow

References

1. String.replaceAll – Java Doc