passwordValidator.java

import java.util.Scanner;

class Main{

	public static void main(String args[]){
		Scanner input = new Scanner(System.in);
		System.out.print("Enter your password:  ");
		String password = input.nextLine();
		passwordValidator(password);
	}

	public static void passwordValidator(String password){
		boolean includeNumber = password.matches(".*\\d.*");
		boolean includeLetterLowerCase = password.matches(".*[a-z].*");
		boolean includeLetterUpperCase = password.matches(".*[A-Z].*");
		boolean passwordIsLongerThanEightChar = password.length() >= 8;
		boolean includeSpecialChar = !password.matches("[a-zA-Z0-9]*");
		passwordChecker(includeLetterLowerCase, includeLetterUpperCase, includeNumber, passwordIsLongerThanEightChar, includeSpecialChar);

	}

	public static void passwordChecker(Boolean lowLetters, Boolean upperLetters, Boolean number, Boolean longer, Boolean specChar){
		if(lowLetters && upperLetters && number && longer && specChar) print("Your password is strong");
		else print( "include number: " + number + "\ninclude lower case letter: " + lowLetters + "\ninclude upper case letter: " + upperLetters + "\npassword longer than 8 letter: " + longer + "\ninclude specialChar: " + specChar);
	}


	public static void print(String text){
		System.out.println(text);
	}
}