TDB2 is not compatible with Apache Jena TDB (TDB1).

Simple migration of code is to use TDB2Factory in place of TDBFactory to create datasets. DatasetGraph objects are now created via DatabaseMgr.

Example code: TDB2Factory

    public static void main(String[] args) {
         Dataset ds = TDB2Factory.createDatasetGraph() ;
         Txn.execWrite(ds, ()->{
              RDFDataMgr.read(ds, "SomeData.ttl");
         }) ;
          Txn.execRead(dsg, ()->{
             RDFDataMgr.write(System.out, ds, Lang.TRIG) ;
         }) ;
    }