Java method to determine whether a file exists on a remote server

Doing data file import to     LEFTII    In is encountered a file, when doing the import sometimes generated the original file may not exist, now by adding a judgment, whether the file exists, at first thought of a simple judgment file & PI;   File. The exists ()     Save or not, but it turns out that this is only a way to tell if a local file exists.

Here's a neat way to show you that by sharing remote files locally, you can easily solve this problem with computer diffraction

The process is as follows

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Then enter the username and password in the following steps, so that you can determine whether the file exists locally.