数组存储在链表中。 （爪哇）

Question

Is it possible to store a whole array as a node in a linked list. I am using the Linked List collection java provides and I keep getting an error for the following code.

List<Object[]> params = new LinkedList<Object[]>(); 
params.add(new Object[] { "ahhsjhs", {"jsdjdsk","djksdjsdk"}, true}); 

Type mismatch: cannot convert from String[] to Object

Answer 1

You can use this and not get error

List<Object[]> params = new LinkedList<Object[]>(); 
params.add(new Object[]{"ahhsjhs", new String[]{"jsdjdsk", "djksdjsdk"}, true});

You can even do this and there is nothing wrong

List<Object[]> params = new LinkedList<Object[]>(); 
params.add(new Object[]{"ahhsjhs", new Object[]{new Object[] {"@@", new Object[] {"@@"},"@@"}, "@@"}, true});

But it is bad practice. You should approach to OOP.

Answer 2

Just put this String[] objects :

List<Object[]> params = new LinkedList<Object[]>();
String[] objects = new String[] { "jsdjdsk", "djksdjsdk" };
params.add(new Object[] { "ahhsjhs", objects, true });

Answer 3

It is possible, and you're doing it (almost) correctly. Compiler get confused with the inline declaration, doing the declaration outside should get you past the error, something like the following:

        List<Object[]> params = new LinkedList<Object[]>();
        String[] a = new String[]{"jsdjdsk","djksdjsdk"};
        params.add(new Object[] { a });
        params.add(new Object[] { "ahhsjhs", true});
        System.out.println(params);
    }

This with java:8.

Answer 4

I don't really see why you would want to do this but removing the inner braces might do the trick, that is:

List<Object[]> params = new LinkedList<>(); 
params.add(new Object[]{"ahhsjhs","jsdjdsk","djksdjsdk",true});

(I would have posted this as a comment but I don't have enough reputation)