gg

import java.util.Random;

public class PasswordGenerator {

    private static final String CAPITAL_LETTERS =

            "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

    private static final String SMALL_LETTERS =

            "abcdefghijklmnopqrstuvwxyz";

    private static final String DIGITS = "0123456789";

    private static final String SPECIAL_CHARS =

            "~!@#$%^&*()_+=`{}[]\\|':;.,/?<>";

    private static final String ALL_CHARS =

            CAPITAL_LETTERS + SMALL_LETTERS + DIGITS + SPECIAL_CHARS;

    private static Random rnd = new Random();

   public static void main(String[] args) {

    StringBuilder password = new StringBuilder();

    for (int i=1; i<=2; i++) {

        char capitalLetter = generateChar(CAPITAL_LETTERS);

        insertAtRandomPosition(password, capitalLetter);

    }

    for (int i=1; i<=2; i++) {

        char smallLetter = generateChar(SMALL_LETTERS);

        insertAtRandomPosition(password, smallLetter);

    }

    char digit = generateChar(DIGITS);

    insertAtRandomPosition(password, digit);

    for (int i=1; i<=3; i++) {

        char specialChar = generateChar(SPECIAL_CHARS);

        insertAtRandomPosition(password, specialChar);

    }

    int count = rnd.nextInt(8);

    for (int i=1; i<=count; i++) {

        char specialChar = generateChar(ALL_CHARS);

        insertAtRandomPosition(password, specialChar);

    }



    System.out.println(password);

}



private static void insertAtRandomPosition(

        StringBuilder password, char character) {

    int randomPosition = rnd.nextInt(password.length()+1);

    password.insert(randomPosition, character);

}



private static char generateChar(String availableChars) {

    int randomIndex = rnd.nextInt(availableChars.length());

    char randomChar = availableChars.charAt(randomIndex);

    return randomChar;


    }
}