package ch.epfl.alpano.dem;

import java.io.File;
import java.io.IOException;
import java.io.FileInputStream;
import java.nio.ShortBuffer;
import java.nio.channels.FileChannel.MapMode;

public class MemMapExample {
  public static void main(String[] args)
      throws IOException {
    File f = new File("HGT"+File.separatorChar+"N46E007.hgt");
    long l = f.length();
    try (FileInputStream s = new FileInputStream(f)) {
      ShortBuffer b = s.getChannel()
        .map(MapMode.READ_ONLY, 0, l)
        .asShortBuffer();

      for (int i = 0; i <= 5; ++i)
        System.out.println(b.get(i));
      System.out.println("-----------------");
      for (int i = 12967195; i < 12967201; ++i)
          System.out.println(b.get(i));
    }
  }
}