![Java password verifier program](https://kumkoniak.com/96.jpg)
- The character data type has a default function isUpperCase, isLowerCase, and isDigit.
- We then iterate all the password characters and store each character in a c variable of type char.
- nextLine() that reads user input and then store that in a string.
- The scanner function has a default function of.
- In our program object of the scanner, class is input. To take user input, we first import the scanner class in our program and then create an object.
- We’ll first ask the user to enter a password to validate the given password.
- By initializing the counter variable by 0, we ensure they don’t contain any garbage value.
- After declaring the counter variables, we initialize them by 0.
- To count how many uppercase, lowercase, digits, or special characters our password has, we’ll declare variables uppercaseCounter, lowercaseCounter, special, and digitCounter of type integer.
- For this purpose, we define the variable MAX, MIN_Uppercase, MIN_Lowercase, Num_Digits, and Special of type int.
- Before checking our password, we must specify how many uppercase, lowercase, special case letters, or digits an ideal password should contain.
- A standard password includes two special symbols Algorithm to Validate Password in Java.
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- A standard password contains two lowercase letters.
- A regular password contains at least includes two uppercase letters.
- A standard password contains at least eight characters.
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Validating password included checking the password whether it is correct or not according to the password policy discussed below: While creating a login page, we often have to validate the password and check whether it follows the proper standard or not.