A stream is not really a data structure as such (conceptually), but is !a sequence of digitally encoded coherent signals (packets of data or data packets) used to transmit or receive information". So basically a sequence of data.

A queue is a simple FIFO mechanism allowing you to add items to the back of the queue or take from the front.

Streams always have a source, e.g. a file, network location, etc. A Queue does not inherently contain any data.

So essentially they are quite different in concept and as Mason pointed out, they are used differently.

A stream is not really a data structure as such (conceptually), but is a sequence of digitally encoded coherent signals (packets of data or data packets) used to transmit or receive information". So basically a sequence of data.

A queue is a simple FIFO mechanism allowing you to add items to the back of the queue or take from the front.

Streams always have a source, e.g. a file, network location, etc. A Queue does not inherently contain any data.

So essentially they are quite different in concept and as Mason pointed out, they are used differently.