private boolean isFileUpdated(File file) {

		// If the timestamp == -1, then this is the first time the timer has gone off, so ignore
		// it. This is here to keep from popping up a notification immediately after the file
		// has been brought up.
		if (timestamp == -1) {
			timestamp = file.lastModified();
			return false;
		}
		else if (timestamp != file.lastModified()) {
			timestamp = file.lastModified();
			return true;
		}

		return false;
	}
Checks the timestamp of the given file to see if it has changed.  If so, returns true.

@param file
@return
Ghidra/Framework/Project/src/main/java/ghidra/framework/main/logviewer/ui/FileWatcher.java