Two ways to start a thread in Java + @

public class Qiita {
    public static void main(String[] args) {
        new HelloThread("World!").start();
        new HelloThread("Qiita!").start();
    }
}

class HelloThread extends Thread {
    private String message;

    public HelloThread(String message) {
        this.message = message;
    }

    public void run() {
        System.out.print("Hello, " + message);
    }
}

public class Qiita {
    public static void main(String[] args) {
        new Thread(new Greeting("World!")).start();
        new Thread(new Greeting("Qiita!")).start();
    }
}

class Greeting implements Runnable {
    private String message;

    public Greeting(String message) {
        this.message = message;
    }

    public void run() {
        System.out.print("Hello, " + message);
    }
}

public class Qiita {
    public static void main(String[] args) {
        ThreadFactory factory = Executors.defaultThreadFactory();
        factory.newThread(new Greeting("Qiita!")).start();
    }
}

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