[Biojava-l] opening unknown fasta file

[Koen van der Drift]

Hi,
The BioJava tutorial (in anger) suggests the following code to open a 
fasta file:

[snip]
 // get the appropriate Alphabet
   Alphabet alpha = AlphabetManager.alphabetForName(args[1]);
 // get a SequenceDB of all sequences in the file
   SequenceDB db = SeqIOTools.readFasta(is, alpha);
But what should I do when I don't know if the fasta file contains a 
protein or dna sequence?

thanks,
- Koen.
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