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

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import java.io.BufferedOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.RandomAccessFile;

public class MainClass {
  public static void main(String[] argv) {
    try {
      RandomAccessFile raf = new RandomAccessFile("datafile", "rw");
      BufferedOutputStream bos = new BufferedOutputStream(raf);
      DataOutputStream dos = new DataOutputStream(bos);
      dos.writeDouble(Math.PI);
      dos.close();
      bos.close();
      raf.close();
    } catch (IOException e) {
    }

  }
}