code: public Table dropRowsWithMissingValues() {
  
          Selection missing = new BitmapBackedSelection();
  
          for (int row = 0; row < rowCount(); row++) {
              for (int col = 0; col < columnCount(); col++) {
                  Column<?> c = column(col);
                  if (c.isMissing(row)) {
                      missing.add(row);
                      break;
                  }
              }
          }
          Selection notMissing = Selection.withRange(0, rowCount());
          notMissing.andNot(missing);
          Table temp = emptyCopy(notMissing.size());
          Rows.copyRowsToTable(notMissing, this, temp);
          return temp;
      }
docs: Returns only those records in this table that have no columns with missing values