集合排序

public class sortClass implements Comparator{

public int compare(Object arg0,Object arg1){

OrderListReturn.Entity user0 = (OrderListReturn.Entity)arg0;

OrderListReturn.Entity user1 = (OrderListReturn.Entity)arg1;

int flag = user1.createTime.compareTo(user0.createTime);

return flag;

}

}

 

 

sortClass sort = new sortClass();

Collections.sort(results, sort);