INTERVIEW QUESTIONS J2EE JMS DETAILS

Question:
How to create a durable subsriber ?

Answer: Having performed the normal setup, an application can create a durable subscriber to a destination. To do this, the client program creates a durable TopicSubscriber, using session.createDurableSubscriber. The name subName is used as an identifier of the durable subscription.
session.createDurableSubscriber( Topic topic, java.lang.String subName, java.lang.String messageSelector, boolean noLocal);
Alternatively, you can use the two-argument form of this operation, which takes only a topic and name (subName) as parameters. This alternative form invokes the four-argument operation with null as the messageSelector and false as the noLocal parameters.A JMS durable subscription is created with a unique identifier of the form clientID+"##"+subName. The characters ## should not be used in the clientID or subName if the JMS connection is to use a durable

Having performed the normal setup, an application can create a durable subscriber to a destination. To do this, the client program creates a durable TopicSubscriber, using session.createDurableSubscriber. The name subName is used as an identifier of the durable subscription.
session.createDurableSubscriber( Topic topic, java.lang.String subName, java.lang.String messageSelector, boolean noLocal);
Alternatively, you can use the two-argument form of this operation, which takes only a topic and name (subName) as parameters. This alternative form invokes the four-argument operation with null as the messageSelector and false as the noLocal parameters.A JMS durable subscription is created with a unique identifier of the form clientID+"##"+subName. The characters ## should not be used in the clientID or subName if the JMS connection is to use a durable Source: CoolInterview.com

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