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Quandl REST API wrapper for Java

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package com.jimmoores.quandl.example;

import java.util.Iterator;

import org.threeten.bp.LocalDate;

import com.jimmoores.quandl.Frequency;
import com.jimmoores.quandl.MultiDataSetRequest;
import com.jimmoores.quandl.QuandlCodeRequest;
import com.jimmoores.quandl.QuandlSession;
import com.jimmoores.quandl.Row;
import com.jimmoores.quandl.TabularResult;

/**
 * Example 3a.
 */
public final class Example3a {
  private static final int CLOSE_COLUMN = 4;
  private static final LocalDate RECENTISH_DATE = LocalDate.of(2013, 1, 1);

  /**
   * Private default constructor.
   */
  private Example3a() {
  }
 
  /**
   * The main body of the code.
   */
  private void run() {
    QuandlSession session = QuandlSession.create();
    TabularResult tabularResultMulti = session.getDataSets(
        MultiDataSetRequest.Builder
          .of(
            QuandlCodeRequest.singleColumn("WIKI/AAPL", CLOSE_COLUMN), 
            QuandlCodeRequest.allColumns("DOE/RWTC")
          )
          .withStartDate(RECENTISH_DATE)
          .withFrequency(Frequency.MONTHLY)
          .build());
    System.out.println("Header definition: " + tabularResultMulti.getHeaderDefinition());
    Iterator iter = tabularResultMulti.iterator();
    while (iter.hasNext()) {
      Row row = iter.next();
      LocalDate date = row.getLocalDate("Date");
      Double value = row.getDouble("DOE.RWTC - Value");
      System.out.println("Value on date " + date + " was " + value);
    } 
  }

  /**
   * Main entry point.
   * @param args command line arguments
   */
  public static void main(final String[] args) {
    Example3a example = new Example3a();
    example.run();
  }
}