Pin and Password Generator JAVA

I am reaching my one year on programming and decided to create a simple pin and password program to better help me understand arrays. As far as coding standards, best practices, and functionality what else could I do to this to make it better?

public static void main(String []args){

    choicePrompt(); // Prompt to choose pin or password.
    menuMethod(); // Method to catch user input if not (1) PIN, (2) Password or (3) Exit.

}

static void choicePrompt() {
    System.out.printf("Password Generator:%n");
    System.out.printf("1 - Create PIN%n");
    System.out.printf("2 - Create Password%n");
    System.out.printf("3 - EXIT%n");
}

// Method accepts (1), (2), (3) or handles any input exception.
static void menuMethod() {
    int input = 0;  // Initialize integer input value.
    while (input != 1 && input != 2 && input != 3) { // User must choose these options to progress.
        Scanner obj = new Scanner(System.in); // Creates object for user input.
        try { // Try-catch block to catch incorrect input value...i.e. not an integer.
            input = obj.nextInt(); // 1 - PIN // 2 - Password // 3 - EXIT.
            if (input == 1 || input == 2 || input == 3) {
                inputMethod(input); // Successful input
            }
            else {
                invalidValuePrompt(); // Remind user to select correct value.
                menuMethod(); // Recursive call gives user option to create PIN, Password or EXIT.
            }
        } catch (InputMismatchException e) { // If input is not an integer.
            // Skip to finally block
        } finally {
            invalidValuePrompt(); // Remind user to select correct value.
            menuMethod(); // Recursive call gives user option to create PIN, Password or EXIT.
        }
    }
}

// Method for menuMethod()
static void invalidValuePrompt() {
    System.out.printf("Please enter: %n1 - Create PIN%n2 - Create Password%n3 - EXIT%n");
}

// Method takes users input and starts pinGenerator(), passwordGenerator() or EXITS program.
static void inputMethod(int input) { // If statement selects PIN, Password or EXIT option according to input.
    Scanner obj = new Scanner(System.in); // Creates object for user input.
    if (input == 1) { // PIN generator
        int pinLength = 0;
        System.out.printf("Enter pin length: (4 - 32)%n");
        try {
            pinLength = obj.nextInt();
            while (pinLength < 4 || pinLength > 32) {
                System.out.printf("Please enter: (4-32)%n");
                pinLength = obj.nextInt();
            }
        }  catch (InputMismatchException e) { // If input is not an integer.
            // Skip to finally block
        } finally { // Executes if user does not enter valid password length.
            if (pinLength < 4 || pinLength > 32) {
                invalidValuePrompt();
                inputMethod(input); // Recursive call to method.
            }
        }
        pinGenerator(pinLength); // PIN generates and is printed.
        System.exit(0); // Program is finished.
    }
    else if (input == 2) { // Password generator
        int passwordLength = 0;
        System.out.printf("Enter password length: (6-64)%n");
        try {
            passwordLength = obj.nextInt();
            while (passwordLength < 4 || passwordLength > 64) {
                invalidValuePrompt();
                System.out.printf("Please enter: (4-64)%n");
                passwordLength = obj.nextInt();
            }
        } catch (InputMismatchException e) {
            // Skip to finally block
        } finally {
            if (passwordLength < 4 || passwordLength > 64) {
                invalidValuePrompt();
                inputMethod(input); // Recursive call to method.
            }
        }
        passwordGenerator(passwordLength); // Password generates and is printed.
        System.exit(0); // Program exits.
    }
    else if (input == 3) { // EXIT program.
        System.exit(0);
    }
}

// Method used during try-catch blocks when user inputs a non-integer value.
static void invalidValue() {
    System.out.printf("Invalid value.%n");
}

// Method generates pin from an array. passwordLength is determined in previous
// method by user.
static void pinGenerator(int passwordLength) {
    SecureRandom random = new SecureRandom();
    int[] myArray2 = {1, 2, 3, 4, 5, 6, 7, 8, 9, 0};

    // Array prints random index with SecureRandom Class.
    for (int i = 0; i < passwordLength; i++) {
        int randomNum = random.nextInt(myArray2.length);
        System.out.print(myArray2[randomNum]);
    }
}

// Method generates a random password using SecureRandom class by utilizing four arrays with alphabetical
// characters, numerical values and special characters.
static void passwordGenerator(int passwordLength) {

    SecureRandom random = new SecureRandom();

    String[] myArray = {"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n","o",
            "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"};
    int[] myArray2 = {1, 2, 3, 4, 5, 6, 7, 8, 9, 0};
    String[] myArray3 = {"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O",
            "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"};
    String[] myArray4 = {"!", "@", "#", "%", "&", "=", "?", "-"};

    // For loop generates password from array using switch class.
    for (int i = 0; i < passwordLength; i++) { // passwordLength equals users input.
        int valueChoice = 1 + random.nextInt(4); // Bounds account for all arrays in switch case.
        switch(valueChoice) {
            case 1: // Random lowercase letter is chosen from array.
                int randomLowerCaseLetter = random.nextInt(myArray.length);
                System.out.print(myArray[randomLowerCaseLetter]);
                break; // Restarts loop and generates next value.
            case 2: // Random numerical value (0-9) is chosen from array.
                int randomNum = random.nextInt(myArray2.length);
                System.out.print(myArray2[randomNum]);
                break;
            case 3: // Random uppercase letter is chosen from array.
                int randomUpperCaseLetter = random.nextInt(myArray3.length);
                System.out.print(myArray3[randomUpperCaseLetter]);
                break;
            case 4: // Random special character is chosen from array.
                int randomSymbols = random.nextInt(myArray4.length);
                System.out.print(myArray4[randomSymbols]);
                break;
        }
    }
}