Is there functionality to generate a random character in Java?

Question

Does Java have any functionality to generate random characters or strings? Or must one simply pick a random integer and convert that integer\'s ascii code to a character?

Answer 1

Here is the code to generate random alphanumeric code. First you have to declare a string of allowed characters what you want to include in random number.and also define max length of string

 SecureRandom secureRandom = new SecureRandom();
 String CHARACTERS = "ABCDEFGHIJKLMNOPQRSTUVWXYZ123456789";
    StringBuilder generatedString= new StringBuilder();
    for (int i = 0; i < MAXIMUM_LENGTH; i++) {
        int randonSequence = secureRandom .nextInt(CHARACTERS.length());
        generatedString.append(CHARACTERS.charAt(randonSequence));
    }

Use toString() method to get String from StringBuilder