Training a Custom Model using Java Code - Stanford NER

Question

Could someone help me to convert these lines to Java code, instead of using terminal?

I'm trying to train my own model using Stanford Ner:

java -cp stanford-ner.jar edu.stanford.nlp.process.PTBTokenizer jane-austen-emma-ch1.txt > jane-austen-emma-ch1.tok

perl -ne 'chomp; print "$_\tO\n"' jane-austen-emma-ch1.tok > jane-austen-emma-ch1.tsv

java -cp stanford-ner.jar edu.stanford.nlp.ie.crf.CRFClassifier -prop austen.prop

And must the training file be in .tsv format???