Wait for Download to finish in selenium webdriver JAVA

Question

Once clicking a download button, files will be downloaded. Before executing next code, it needs to wait until the download completes.

My code looks like this:

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Answer 1

Some operating systems (e.g. Mac OS X) don't set the filename until the download is complete. So it seems sufficient to use a wait or a while loop to check for the file to exist.

e.g.

File file = new File(fullPathToFile);
while (!file.exists()) {
    Thread.sleep(1000);
}