Java tutorial
import java.io.File; import java.io.FileDescriptor; import java.io.FileInputStream; import java.io.IOException; public class MainClass { public static void main(String[] a) { File aFile = new File("C:/myFile.text"); FileInputStream inputFile1 = null; FileDescriptor fd = null; try { inputFile1 = new FileInputStream(aFile); fd = inputFile1.getFD(); } catch (IOException e) { e.printStackTrace(System.err); System.exit(1); } FileInputStream inputFile2 = new FileInputStream(fd); } }