Accessing input type=“file” full path from a Java applet


It is possible to access HTML DOM from an applet using netscape.javascript JSObject API. However, if I query a value of a input type="file", on some browsers (Opera) I get a full path to a selected file, but on other browsers (Firefox, Chrome) just a file name <em>without path</em>.

Is it possible, having an HTML input type="file", to figure out the full path to the file selected in it from a Java applet?

The reason why I bother: signed applets can access file system, and browsers' file selectors are a lot nicer than Java swing one.


You cannot. You're restricted by HTML/JS (and browser) security limitations. Officially, the value of input type="file" should only return the filename, never the filepath. I am however surprised that Opera returns the full path, namely because MSIE was the only one I knew of who did it.

But as you're already running an applet, why don't you just make use of its capabilities? You can use <a href="http://java.sun.com/docs/books/tutorial/uiswing/components/filechooser.html" rel="nofollow">Swing's JFileChooser</a> to select a file, exactly as you can do with HTML input type="file".


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