how can I download a file using Java?

Question

Possible Duplicate:
How do you Programmatically Download a Webpage in Java

How to download a file using java. So for example, I want to construct a program which will take some input e.g the website download. and then download the file. Please note that I am not looking for the code or anything. I just want to be pointed in the correct direction and that's it.

how is this a duplicate, can you not read? I want to download a file not a webpage.... read the question then comment if it is a duplicate or not. — Jeel Shah, May 23 '11 at 14:02
I can read. Downloading a file and a webpage over the internet is the exact same process. Technically speaking, a webpage is a file. — jjnguy, May 23 '11 at 14:03
@jjnguy i want to download a file e.g .pdf .xls etc when i was writing that i was not using techincally terms but terms where your not supposed to technical. — Jeel Shah, May 23 '11 at 14:08
your accepted answer is using the same process as the question I linked to. You can download pdfs and excel files over http just the same as you would download html files. — jjnguy, May 23 '11 at 14:15

score 4 · Accepted Answer · answered May 23 '11 at 13:57

4

If you want to download a file from a URL, have a look at java.net.URLConnection.

answered May 23 '11 at 13:57

Paŭlo Ebermann

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score 3 · Answer 2 · edited May 23 '17 at 11:43

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Have a look at this Stack Overflow question:

How do you Programmatically Download a Webpage in Java

edited May 23 '17 at 11:43

Community

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answered May 23 '11 at 13:59

jjnguy

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score 2 · Answer 3 · answered May 23 '11 at 13:58

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By using HttpURLConnection (better than java.net.URLConnection IMHO)

answered May 23 '11 at 13:58

Manuel Salvadores

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That link points to a really old version of Java. – jzd May 23 '11 at 13:58
sorry - google's fault. Fixed. Thanks !!! – Manuel Salvadores May 23 '11 at 13:59
Should be this.. http://download.oracle.com/javase/6/docs/api/java/net/HttpURLConnection.html – notthetup May 23 '11 at 14:00
thanks. Yes Google still returns at lot of 1.4 results because so many other pages still reference them. – jzd May 23 '11 at 14:01

score 2 · Answer 4 · answered May 23 '11 at 14:00

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URLConnection.getInputStream() is what you're looking for. Moving the actual bytes is a bit tedious and error-prone, so if you just want to get it done, using an existing, tested implementation like FileUtils from Apache commons IO would be the best idea.

answered May 23 '11 at 14:00

Michael Borgwardt

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how can I download a file using Java?

4 Answers4