Program to display valid and invalid password Program plan: Filename: “ValidatePassword.java” Define the “ValidatePassword” class Declare the required variables and set the values. Create an object for scanner class. Prompt the user to enter the password. Read the length of the string and store it in a variable. Using, if…else condition check whether the string contains two uppercase, 3 lowercase and one digit. If the condition is satisfied, print the string as valid password, else print as invalid password.

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Methods (Ch6) - Review 1. (The MyRoot method) Below is a manual implementation of the Math.sqrt() method in Java. There are two methods, method #1 which calculates the square root for positive integers, and method #2, which calculates the square root of positive doubles (also works for integers). public class SquareRoot { public static void main(String[] args) { } // implement a loop of your choice here // Method that calculates the square root of integer variables public static double myRoot(int number) { double root; root=number/2; double root old; do { root old root; root (root_old+number/root_old)/2; } while (Math.abs(root_old-root)>1.8E-6); return root; } // Method that calculates the square root of double variables public static double myRoot(double number) { double root; root number/2; double root_old; do { root old root; root (root_old+number/root_old)/2; while (Math.abs (root_old-root)>1.0E-6); return root; } } Program-it-Yourself: In the main method, create a program that…

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Chapter 7, Problem 4PE

Program Plan Intro

Program to display valid and invalid password

Program plan:

Filename: “ValidatePassword.java”

Define the “ValidatePassword” class

Declare the required variables and set the values.

Create an object for scanner class.

Prompt the user to enter the password.

Read the length of the string and store it in a variable.

Using, if…else condition check whether the string contains two uppercase, 3 lowercase and one digit.

If the condition is satisfied, print the string as valid password, else print as invalid password.

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