对象的数组列表 - 最小值 [英] Arraylist of objects - smallest value

问题描述

我有一个对象数组列表，并且这些对象具有双重"值.我需要打印出所有对象，并首先打印具有最高值的对象，最后打印具有最低值的对象.

I have an arraylist of objects, and the objects have "double" values. I need to print out all the objects, and have the object with the highest value printed first, and the object with the lowest value last.

我也尝试使用集合对数组列表进行排序然后打印，但我似乎无法让它工作.

I have also tried to use Collections to sort the arraylist and then print, but I can't seem to get it to work.

我的数组列表是:

ArrayList<Transition> transitions = new ArrayList<Transition>();

当我尝试使用 Collections 时:

When i tried to used Collections i used:

Object minValue = Collections.min(transitions);

希望你们中的一些人可以提供帮助:)

Hope some of you can help :)

推荐答案

如果 Transition 对象实现了 Comparable 接口试试这种方式.它应该可以工作.

If Transition object implemented Comparable interface try this way. It should work.

 Collections.sort(transitions);
 Transition transition = transitions.get(0);

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