ASYNCHRONOUS - Java EE Design Patterns - page 119

logger.info(msg);
}

@Asynchronous
public void logAsync(String msg){
logger.info(msg);
}
}

The logAsync() method, unlike its logInfo() counterpart, is executed asynchronously. To observe
asynchronous behavior, add Thread.sleep() calls:
public void logInfo(String msg) {
logger.info(“Entering sync log”);

try {
Thread.sleep(1000);
} catch (InterruptedException e) {}

logger.info(msg);
}

@Asynchronous
public void logAsync(String msg {
logger.info(“Entering async log”);

try {
Thread.sleep(13000);
} catch (InterruptedException e) {}

logger.info(msg);
}

Finally, create a new bean to call both functions in order, as shown in Listing 9‐2.

LISTING 9‐2: Refactor of Listing 9.1 to include both functions

package com.devchronicles.asynchronous;

import javax.annotation.PostConstruct;
import javax.ejb.Singleton;
import javax.ejb.Startup;

@Startup
@Singleton
public class TestLogging {

@EJB
MyLoggingBean logBean;

continues

@PostConstruct