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How to extract only special characters from a string in Java

1 Answer

0 votes
public class MyClass {
    static String extract_only_pecial_characters(String s) { 
        int len = s.length(); 
        String regx = "[a-zA-Z0-9\\s+]"; 
        String pecial_characters = "";
        for (int i = 0; i < len; i++) { 
            char ch = s.charAt(i); 
            if (!String.valueOf(ch).matches(regx))  
               pecial_characters = pecial_characters + ch; 
        return pecial_characters; 
    public static void main(String args[]) {
        String s = "c++14$vb.net&%java*() php <>/python 3.7.3"; 


answered Aug 15, 2019 by avibootz