Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.util.function.Consumer;

public class Main {

    public static void main(String[] args) {
        Mailer.send(mailer -> {
            mailer.to("to@example.com").from("from@exmaple.com").subject("Some subject").body("Some content");
        });
    }
}

class Mailer {
    public Mailer to(String address) {
        System.out.println("To: " + address);
        return this;
    }

    public Mailer from(String address) {
        System.out.println("From: " + address);
        return this;
    }

    public Mailer subject(String sub) {
        System.out.println("Subject: " + sub);
        return this;
    }

    public Mailer body(String body) {
        System.out.println("Body: " + body);
        return this;
    }

    public static void send(Consumer<Mailer> mailerOperator) {
        Mailer mailer = new Mailer();
        mailerOperator.accept(mailer);
        System.out.println("Sending ...");
    }
}