What is the output(FileOutputStream)? : Questions « File « SCJP

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import java.io.FileOutputStream;
import java.io.RandomAccessFile;

public class MainClass {
  public static void main(String[] argv) throws Exception{
    FileOutputStream fos = new FileOutputStream("xx");
    for (byte b = 10; b < 50; b++)
      fos.write(b);
    fos.close();
    RandomAccessFile raf = new RandomAccessFile("xx", "r");
    raf.seek(10);
    int i = raf.read();
    raf.close();
    System.out.println("i = " + i);

  }
}