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import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
public class MainClass {
public static void main(String[] args) throws IOException {
FileInputStream inFile = new FileInputStream(args[0]);
FileOutputStream outFile = new FileOutputStream(args[1]);
FileChannel inChannel = inFile.getChannel();
FileChannel outChannel = outFile.getChannel();
for (ByteBuffer buffer = ByteBuffer.allocate(1024 * 1024); inChannel.read(buffer) != -1; buffer
.clear()) {
buffer.flip();
while (buffer.hasRemaining())
outChannel.write(buffer);
}
inChannel.close();
outChannel.close();
}
}
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