我有简单的课程
public class ActiveAlarm {
public long timeStarted;
public long timeEnded;
private String name = "";
private String description = "";
private String event;
private boolean live = false;
}
和List<ActiveAlarm>con.如何按升序排序timeStarted,然后按timeEnded？有人可以帮忙吗？我知道在C++中使用泛型算法和重载运算符<,但我是Java的新手.