@Configuration
......
@Bean
    public Daemon startDaemon(){
        Daemon d = new Daemon();
        return d;
    }

    @Bean
    public Daemon startDaemon(){
        Daemon d = Daemon.start();
        return d;
    }

public class Daemon {
    static Daemon d;
   

    public static Daemon start() {
        if (d == null) {
            d = new Daemon();
            return d;
        } else {
            return d;
        }
    }

    Daemon() {
        System.out.println("START START START!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
        
        Thread t = new Thread(new Runnable() {
            @Override
            public void run() {
                while (true) {
                    try {
                        Thread.sleep(2000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    System.out.println(" daemon is running!!!");
                }
            }
        });
        t.run();

    }
}

27-Apr-2016 16:30:54.666 SEVERE [main] org.apache.catalina.startup.Catalina.stopServer Catalina.stop: 
 java.net.ConnectException: Connection refused: connect
	at java.net.DualStackPlainSocketImpl.connect0(Native Method)
	at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345)
	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
	at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
	at java.net.Socket.connect(Socket.java:589)
	at java.net.Socket.connect(Socket.java:538)
	at java.net.Socket.<init>(Socket.java:434)
	at java.net.Socket.<init>(Socket.java:211)
	at org.apache.catalina.startup.Catalina.stopServer(Catalina.java:450)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:483)
	at org.apache.catalina.startup.Bootstrap.stopServer(Bootstrap.java:400)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:487)