Question

How to replaces the first match in a string using regex in Java

Answer 1

import java.util.regex.Pattern;
import java.util.regex.Matcher;

public class MyClass {
    public static void main(String args[]) {
        String s = "java01223c++3php500--9_8";  
        String regex = "[0-9]+";            

        Pattern pattern = Pattern.compile(regex);

        Matcher matcher = pattern.matcher(s);

        String rf = "*";
        String new_s = matcher.replaceFirst(rf); 
        System.out.println(new_s);
    }
}



/*
run:

java*c++3php500--9_8

*/

 

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