枚举类型

/**
* 排序控制
* @author Mr.chen 2016-6-1
*/

public class OrderItem {

//列名（对应实体的属性命名规范）
String columnName;
//排序方式
OrderOption option = OrderOption.DESC;

public String getColumnName() {
return columnName;
}

public String getType() {
return option.getType();
}

public OrderItem(String columnName, OrderOption option) {
this.columnName = columnName;
this.option = option;
}

/**
* 排序枚举类型
*/
public enum OrderOption {
ASC("ASC"),
DESC("DESC");
String type;

OrderOption(String type){
this.type = type;
}

public String getType() {
return type;
}

public void setType(String type) {
this.type = type;
}
}
}

public static void main(String[] args) {
List<OrderItem> orderList = new ArrayList<OrderItem>();
orderList.add(new OrderItem("createDate", OrderOption.DESC));
}