private static ArrayList<String> printData(HashBasedTable<String, String, Double> tbl1) {

    // lstOut = output data
    // sbl1 = current line
    // rgs1 = list of row ids
    // rgs2 = list of headers

    ArrayList<String> lstOut;
    StringBuilder sbl1;
    String rgs1[];
    String rgs2[];

    lstOut = new ArrayList<String>();
    rgs1 = tbl1.rowKeySet().toArray(new String[tbl1.rowKeySet().size()]);
    rgs2 = new String[rgs1.length];
    for (int i = 0; i < rgs1.length; i++) {
      rgs2[i] = (new File(rgs1[i])).getName();
    }
    lstOut.add("SampleID" + "," + Joiner.on(",").join(rgs2));
    for (String s : tbl1.columnKeySet()) {
      sbl1 = new StringBuilder();
      sbl1.append(s);
      for (int i = 0; i < rgs1.length; i++) {
        sbl1.append("," + tbl1.get(rgs1[i], s));
      }
      lstOut.add(sbl1.toString());
    }
    return lstOut;
  }
 @Test
 public void calculateWeight_WeightsCalculated_WeightsCorrect() {
   for (Integer i : tblWeight.rowKeySet()) {
     for (Integer j : tblWeight.columnKeySet()) {
       assertEquals(tblWeight.get(i, j), spw1.getWeight(spw1.getEdge(i, j)), 0.0000001);
     }
   }
 }