JMS onMessage method

I am using a message listener to get message asynchronously. From what I have understand, each time I will receive a message, a call to onMessage will be done. Does it mean that if I have 10 waiting messages in the JMS queue, they will be processed one by one?

For ex, the second message will be processed when the first onMessage call will exit.

[359 byte] By [marlysaa] at [2007-10-3 4:28:10]