List<SelectDataVo> selectDataVos = new ArrayList<>();
      //获取年度
      YearEnum[] values = YearEnum.values();
      for (YearEnum yearEnum : values) {
        SelectDataVo selectDataVo = new SelectDataVo();
        selectDataVo.setText(yearEnum.getYear());
        selectDataVos.add(selectDataVo);
      }

public enum YearEnum {

  /** *上半年   */
  UP_YEAR("上半年"),  DOWN_YEAR("下半年");

  private String year;

  YearEnum(String year) {    this.year = year;  }

  public String getYear() {    return year;  }

  public void setYear(String year) {    this.year = year;  }
}

public class SelectDataVo {
    private String text;

    public SelectDataVo() {
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }
}