import java.io.File; import java.io.RandomAccessFile; public class StringProblem { /** * @param args */ public static void main(String[] args) { try { RandomAccessFile raf = new RandomAccessFile(new File("C:\\foo.txt"), "r"); String dataset = raf.readLine(); String foobar = dataset.substring(65510, 65522); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } }