Decode the Bcrypt encoded password in Spring Security to deactivate user account

Question

I am working on web application project in Spring Hibernate MVC. I am storing encoded passwords in a database using Bcrypt algorithm in Spring security.

Now I want to get

Answer 1

BCryptPasswordEncoder bcrypt = new BCryptPasswordEncoder();  
boolean isPasswordMatches = bcrypt.matches(userenteredpasswordWithotEncryoted, encryptedPasswordFromDb);

Example:

boolean isPasswordMatches = bcrypt.matches(
        "Truck123",
        "$2a$10$kcVH3Uy86nJgQtYqAFffZORT9wbNMuNtqytcUZQRX51dx6IfSFEd."
);


if (isPasswordMatches) { // correct password
    ...
} else { // Wrong Password
    ...
}