How to 'save target as' from java?

pardon for the english and pardon if the post is not in the right place.
the idea to open a webpage (url given) that contains links to several pdf files, and to save those files in the hard disk. how can this be done with java? can anybody help?

Well first you've got to have a webbrowser or some other widget that's displaying PDF files. Normally webbrowsers invoke acrobat to do this so the point is rather moot there, but suppose you have several pdfs open using lowagie or something. The answer is that your PDFs have to come from somewhere, thus there is a data source, so you just need to save the data from the data source to the disk

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