BitSet values ObjectOutputStream operation!

Question

I am using ObjectInputStream /ObjectOutputStream to read/write a set of objects in a TreeSet to a file. Everything works fine except for one field of BitSet. The values of BitSet are not preserved. Am I doing something wrong or is this not possible?
If this is not possible is there any other way to do this, i.e. use another method of writing the objects to the file? Thanks for your help.

Answer 1

Yes you can use it that way... maybe you could post your code as there may be another problem. The following code produces the correct result:
  public static void main( String[] args ) throws Exception {
    File f = new File( "c:/bitset" );
    ObjectOutputStream out = new ObjectOutputStream( new FileOutputStream( f ) );
    BitSet set = new BitSet(3);
    set.set(0);
    set.set(2);
    System.out.println( set );
    out.writeObject(set);
    out.close();
    ObjectInputStream in = new ObjectInputStream( new FileInputStream(f) );
    BitSet set2 = (BitSet)in.readObject();
    System.out.println( set2 );
    in.close();
  }