Question

How to generate a random alphanumeric string in Java

Answer 1

import java.util.Random;

public class MyClass {
    public static String random_alphanumeric_string(int count) {
        String abc = "abcdefghijklmnopqrstuvwxyz0123456789";
        StringBuilder builder = new StringBuilder();
    
        while (count-- != 0) {
            int character = (int)(Math.random() * abc.length());
            builder.append(abc.charAt(character));
        }
    
        return builder.toString();
    }
    public static void main(String args[]) {
        String s = random_alphanumeric_string(20);
        
        System.out.print(s);
    }
}


/*
run:

c890y4neynlxppv9y617

*/

 

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