File: context.xml
"http://www.springframework.org/dtd/spring-beans.dtd">
1000
File: Main.java
import java.util.TimerTask;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationEventPublisher;
import org.springframework.context.ApplicationEventPublisherAware;
import org.springframework.context.ApplicationListener;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Main {
public static void main(String args[]) throws Exception {
ApplicationContext ctx = new ClassPathXmlApplicationContext("context.xml");
Thread.sleep(30 * 1000);
}
}
class HeartbeatTask extends TimerTask implements ApplicationEventPublisherAware {
private ApplicationEventPublisher eventPublisher;
public void run() {
HeartbeatEvent event = new HeartbeatEvent(this);
eventPublisher.publishEvent(event);
}
public void setApplicationEventPublisher(ApplicationEventPublisher eventPublisher) {
this.eventPublisher = eventPublisher;
}
}
class HeartbeatForwarder implements ApplicationListener {
public void onApplicationEvent(ApplicationEvent event) {
if (event instanceof HeartbeatEvent) {
System.out.println("Received heartbeat event: " + event.getTimestamp());
}
}
}
class HeartbeatEvent extends ApplicationEvent {
public HeartbeatEvent(Object source) {
super(source);
}
}