CSVDataSet csvDataSet = new CSVDataSet();
    csvDataSet.setName("CSV Data Set");
    csvDataSet.setComment("Sample CSV Data Set");
    csvDataSet.setDelimiter(",");
    csvDataSet.setFileEncoding("");
    csvDataSet.setFilename("d:\jmeter\data.csv"); // variable
    csvDataSet.setQuotedData(true);
    csvDataSet.setRecycle(true);
    csvDataSet.setShareMode(shareMode.all);
    csvDataSet.setStopThread(false);
    csvDataSet.setVariableNames("firstname, lastname, email"); // variable
    csvDataSet.setEnabled(true);

<org.apache.jorphan.collections.HashTree>
      <CSVDataSet testname="CSV Data Set Config" enabled="true">
        <stringProp name="TestPlan.comments">Sample CSV Data Set Config</stringProp>
      </CSVDataSet>
    <org.apache.jorphan.collections.HashTree/>