Question

Convert this code written in Python to Java:

username=input("please enter a username")
password=input("please enter a password:")

def is_a password(password):
    count_uppercase, count_lowercase= 0, 0
    for characters1 in password:
        if characters1.isupper():
        count_uppercase += 1
        if characters1.islower():
        count_lowercase += 1
    is_password is good = True
    if len(password) <= 7:
        print "Passwords must be at least 8 characters long"
    is_password is good = False
    if count_uppercase < 1:
        print "Your password must contain at least one uppercase character"
        is_password is good = False
   if password.isalnum():
          print "Your password must contain at least one 'special' character"
        is_password is good = False
while (username == password):
print "You cannot use your username as part of your password"
         is_password is good = False

    print "Your password is valid!"
return is_password is good

Answer 1

Please find the code below:

package passwords;

import java.util.Scanner;

public class Passwords {

public static boolean is_a_password(String password)
{
boolean is_password_good = false;
boolean result;
int count_uppercase=0,count_lowercase=0;
int special_character_count=0;
int number_count=0;
  
if(password.length()<=7)
{
System.out.println("Passwords must be atleast 8 characters long");
is_password_good = false;
return is_password_good;
}
for(int i=0;i<password.length();i++)
{
result=Character.isLetter(password.charAt(i));
if(result==true)
{
result=Character.isUpperCase(password.charAt(i));
if(result==true)
count_uppercase++;
  
result=Character.isLowerCase(password.charAt(i));
if(result==true)
count_lowercase++;
}
else
{
result=Character.isDigit(password.charAt(i));
  
if(result==true)
{
number_count++;
}
else
{
special_character_count++;
is_password_good=true;
}
}
  
}
  
if(special_character_count<1)
{
System.out.println("Your password must contain at least one 'special' character");
is_password_good=false;
return is_password_good;
}
else
is_password_good=true;
special_character_count=0;
  
  

if(count_uppercase<1)
{
System.out.println("Your password must contain at least one uppercase character");
is_password_good=false;
return is_password_good;
}
else
{
is_password_good=true;

}
  

return is_password_good;
}
  
public static void main(String[] args) {

String username;
String password;
boolean is_password_good;
  
Scanner sc = new Scanner(System.in);
  
System.out.println("Enter Username:");
username=sc.nextLine();
  
  
System.out.println("Enter Password:");
password=sc.nextLine();
  
  
while(username.equals(password))
{
System.out.println("You cannot use your username as part of your password");
System.out.println("Enter Password:");
password=sc.nextLine();
}
  
  
is_password_good = is_a_password(password);
  
if(is_password_good==true)
System.out.println("Your password is valid");
else
System.out.println("Your password is invalid");
  
  
}
  
}

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Output1:

Output 2:

Output 3:

Output 4:

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Screenshot of the code: