import okio.Buffer;
import okio.BufferedSource;
import okio.BufferedSink;
import okio.Okio;
import java.io.File;
import java.io.IOException;
public class FileHandler {
public static void main(String[] args) {
File inputFile = new File("input.txt");
File outputFile = new File("output.txt");
try {
BufferedSource source = Okio.buffer(Okio.source(inputFile));
BufferedSink sink = Okio.buffer(Okio.sink(outputFile));
Buffer buffer = new Buffer();
while (source.read(buffer) != -1) {
sink.write(buffer);
buffer.clear();
}
source.close();
sink.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
