Trying to get the message from server but receive call gets blocked - spring

Question

// This is send message from where I am sending message to server, Its working fine
public void sendMessage(com.google.protobuf.Message sendmessage) {
try {
createJmsTemplate();
createJmsTemplateReciever();
JmsMessageCreator jmsMessageCreator = new JmsMessageCreator() {
#Override
public Message createMessage(Session session) throws JMSException {
BytesMessage msg = session.createBytesMessage();
msg.writeBytes(sendmessage.toByteArray());
return msg;
}
};
MessageCreator messageCreator = new MessageCreator() {
public Message createMessage(Session session) throws JMSException {
Message msg = jmsMessageCreator.createMessage(session);
msg.setJMSCorrelationID("2708");
return msg;
}
};
jmsTemplate.send(messageCreator);
System.out.println("Message sent... ");
} catch (Exception e) {
e.printStackTrace();
System.exit(0);
}
}
//But when i am calling this method, at receive call it gets blocked...
public void recieveMessage() {
try {
byteMessage = (BytesMessage) jmsTemplateReciever.receive();
try {
if (byteMessage != null) {
byte[] byteArr = new byte[(int) byteMessage.getBodyLength()];
for (int i = 0; i < (int) byteMessage.getBodyLength(); i++) {
byteArr[i] = byteMessage.readByte();
String s = new String(byteArr);
System.out.println(s);
}
String s = new String(byteArr);
System.out.println(s);
byteMessage.acknowledge();
}
} catch (JMSException e) {
}
} catch (Exception e) {
e.printStackTrace();
System.exit(0);
}
}
}

Answer 1

As described in section 9.2.2 of JMS 1.1 Specification, the receive() call blocks indefinitely until a message arrives on the queue. Hence the call is getting blocked in your application.
One option for you is to specify a wait time, for example receive(3000) which waits for 3 seconds and comes out if no message arrives in 3 seconds. JMS implementer might be providing another form of receive method where the method returns immediately if there are no messages in the queue.
The other option is to use a message listener for receiving messages asynchronously as described JMS 1.1 Specifications section 9.3.1. Your application gets notified by the JMS provider whenever a message arrives in a queue.