How do I get the file size of a URL file?

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How do I get the file size of a URL file?

You could use the HTTP header field content-length as follows:

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outputs with (java Main http://www.esus.com):

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(I really should start trimming it down :)

Beware that this length does not include the embedded images or other embedded objects.

Also note that a lot of times, especially with dynamically generated pages, getContentLength returns -1 meaning it could not determine the size. In that case you should count the number of bytes as you download the URL through one of the InputStreams or Readers.

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Author of answer: Joris Van den Bogaert

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