import java.io.Serializable;
public class EchoTask implements Runnable, Serializable {
private final String msg;
public EchoTask(String msg) {
this.msg = msg;
}
public void run() {
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println("Echo: " + msg);
}
}