import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.TimeoutException;
public class FilePathRestorer {
/**
* Restores file paths from a file with a timeout.
* @param filePath The path to the file containing file paths.
* @param maxTimeMs The maximum time to wait for reading the file (in milliseconds).
* @return A list of file paths, or an empty list if an error occurs or the file is empty.
* @throws IOException if an I/O error occurs while reading the file.
* @throws TimeoutException if the file reading operation exceeds the timeout.
*/
public static List<String> restoreFilePaths(String filePath, long maxTimeMs) throws IOException, TimeoutException {
List<String> filePaths = new ArrayList<>();
try (BufferedReader reader = new BufferedReader(new FileReader(filePath))) {
long startTime = System.currentTimeMillis();
String line;
while ((line = reader.readLine()) != null) {
if (System.currentTimeMillis() - startTime > maxTimeMs) {
throw new TimeoutException("File reading timed out.");
}
filePaths.add(line.trim()); // Add file path, removing leading/trailing whitespace
}
} catch (IOException e) {
throw e; // Re-throw the IOException
}
return filePaths;
}
public static void main(String[] args) {
// Example usage:
String filePath = "file_paths.txt"; // Replace with your file path
long timeout = 5000; // Timeout in milliseconds
try {
List<String> restoredPaths = restoreFilePaths(filePath, timeout);
for (String path : restoredPaths) {
System.out.println(path);
}
} catch (IOException | TimeoutException e) {
System.err.println("Error restoring file paths: " + e.getMessage());
}
}
}
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