Too Many Parameters (ARCH4181)

Key java.quality.too-many-parameters · Severity warning · Category quality

A long parameter list makes call sites error-prone and hides that related values form one concept. Group related fields into a parameter object.

Incorrect

User create(String first, String last, String email,
            String phone, String city, String zip, boolean active) {
    return new User(first, last, email, phone, city, zip, active);
}

Correct

User create(UserDetails details) {
    return new User(details);
}

record UserDetails(String first, String last, String email,
                   String phone, String city, String zip, boolean active) {}

Fix

Group related parameters into a parameter object (record/DTO), or pass dependencies via DI.