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Yep, more or less that's how a buffer works.

Yes, basically there's some fixed cost associated with performing an operation, plus some dynamic cost depending on the amount of data being requested...

The reason for Buffered streams (and buffers in general) is to mediate slow access operations, for example reading from a hard drive or across the network. The time it takes to read a byte from these...

Why not do something like this:


// java.net.URL imageUrl initialization here
URLConnection connection = imageURL.openConnection();
InputStream is = connection.getInputStream();
int size =...

Are you sure your code works? I can't get it to produce an actual output image.