Can someone please tell me a reliable way to get the last modification time of a Java resource? The resource can be a file or an entry in a JAR.
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Can someone please tell me a reliable way to get the last modification time of a Java resource? The resource can be a file or an entry in a JAR.
If you with “resource” mean something reachable through Class#getResource or ClassLoader#getResource, you can get the last modified time stamp through the URLConnection:
Be aware that getLastModified() returns 0 if last modified is unknown, which unfortunately is impossible to distinguish from a real timestamp reading “January 1st, 1970, 0:00 UTC”.