import java.io.IOException;
import java.io.RandomAccessFile;
public class RandomAccessData {
public static void main(String[] args) throws IOException {
RandomAccessFile f = new RandomAccessFile("/tmp/junk.data", "rw");
f.writeInt(34);
f.writeDouble(3.14159);
f.seek(0); // rewind and read again
int i = f.readInt();
double d = f.readDouble();
f.close();
System.out.printf("read %d and %1.5f\n", i, d);
}
}