What is the name of that pattern in java?

Question

What is the name of that pattern in java? Please see the implementation of RedirectAdultUserHandler1 and RedirectAdultUserHandler2 classes.

public class Main {

    public static void main(String[] args) throws Exception {
        new Main().run();
    }

    private void run() {
        final List<User> users = Arrays.asList(
            new User("john", 1),
            new User("jeff", 22),
            new User("jack", 333)
        );
        UserHandler handler1 = new RedirectAdultUserHandler1(new UserHandler());
        UserHandler handler2 = new RedirectAdultUserHandler2();
        handler1.processAll(users);
        handler2.processAll(users);
    }

}

class User {
    private final String name;
    private final int age;

    User(final String name, final int age) {
        this.name = name;
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }

    @Override
    public String toString() {
        return "User{" +
            "name='" + name + '\'' +
            ", age=" + age +
            '}';
    }
}

class UserHandler {
    public void processAll(List<User> users) {
        users.forEach(user -> process(user, "users"));
        System.out.println();
    }

    public void process(User user, String tableName) {
        System.out.printf("%s stored into %s%n", user, tableName);
    }
}

class RedirectAdultUserHandler1 extends UserHandler {
    private final UserHandler original;

    public RedirectAdultUserHandler1(final UserHandler original) {
        this.original = original;
    }

    @Override
    public void processAll(final List<User> users) {
        original.processAll(users);
    }

    @Override
    public void process(final User user, final String tableName) {
        if (user.getAge() >= 18) {
            original.process(user, "adult_users");
        }
        original.process(user, tableName);
    }
}

class RedirectAdultUserHandler2 extends UserHandler {
    @Override
    public void process(final User user, final String tableName) {
        if (user.getAge() >= 18) {
            super.process(user, "adult_users");
        }
        super.process(user, tableName);
    }
}

The RedirectAdultUserHandler1 is a decorator, but what about the RedirectAdultUserHandler2 one? Is there some name for that?

Answer 1

Here not any pattern is used. RedirectAdultUserHandler2 and RedirectAdultUserHandler1 are subclasses of UserHandler . So it can be concluded that just inheritance is used here.