import java.io.IOException;
import java.io.RandomAccessFile;
public class MainClass {
public static void main(String[] args) throws IOException {
RandomAccessFile rf = new RandomAccessFile("test.dat", "rw");
for (int i = 0; i < 10; i++)
rf.writeDouble(i * 1.414);
rf.close();
rf = new RandomAccessFile("test.dat", "rw");
rf.seek(5 * 8);
rf.writeDouble(47.0001);
rf.close();
rf = new RandomAccessFile("test.dat", "r");
for (int i = 0; i < 10; i++)
System.out.println("Value " + i + ": " + rf.readDouble());
rf.close();
}
}