英文:
Converting an Object list to a Queue
问题
public class ClassOne{static List<ClassTwo> processList = new ArrayList<ClassTwo>();public static Queue<ClassTwo> processQueue = new LinkedList<ClassTwo>();public static void main(String[] args){processList.add(new ClassTwo(1));processList.add(new ClassTwo(2));processList.add(new ClassTwo(3));ConvertToQueue();}static void ConvertToQueue(){processQueue.addAll(processList);}}
英文:
How do I convert a List of objects to a Queue and still be able to access their variables?
First I have a main class that creates instance classes of ClassTwo and gives them a unique ID (just hard coded it for the example)
public class ClassOne{static List<ClassTwo> processList = new ArrayList<ClassTwo>();public static void main(String[] args){processList.add(new Process(1));processList.add(new Process(2));processList.add(new Process(3));}}
ClassTwo:
public class ClassTwo{int id;public ClassTwo(int tempID){id = tempID;}}
How would I convert my List to a Queue so that I can still access each object's ID in class one?
I tried something like:
public class ClassOne{static List<Process> processList = new ArrayList<Process>();public static Queue<Object> processQueue = new LinkedList<Object>();public static void main(String[] args){processList.add(new Process(1));processList.add(new Process(2));processList.add(new Process(3));ConvertToQueue();}ConvertToQueue(List<Process> process){//covert here..}}
but I'm not sure exactly how to then convert it to a Queue, so i can still call variable 'id' from each ClassTwo object. Help would be appreciated!
答案1
得分: 1
你可以使用这个：
Queue<Process> queue = new LinkedList<>(processList);
当你这样做时，你仍然可以访问列表中的每个元素，因为它们都是相同的实例。
英文:
You can use this :
Queue<Process> queue = new LinkedList<>(processList);
When you make this, you can still access to every element of the list, because they are all the same instances.
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