Builder Pattern Example

BuilderPattern.java

public class Main
{
    public static void main(String[] args) {
        // what do all these parameters mean?
        Account account = new Account(1, "Otto", "Päde", 50, "Haselnussstraße", 0, null, "user", false);

        // or with builder pattern
        Account account = new AccountBuilder()
                .withId(1)
                .withFirstName("Otto")
                .withLastName("Päde")
                .withStreetNumber(50)
                .withStreet("Haselnussstraße")
                .withRank("user"); 
        // leave out all the default values
    }
}