How to create an LinkedList<Object[]>[]?

问题

What would be the syntax to create a LinkedList<Object[]>[] type variable?

I have tried:

public LinkedList<Object[]>[] myList = new LinkedList<Object[]>()[];

but this doesn't work.

回答1:

In Java you can't create generic arrays. You can however do this with ArrayList class or any class that implements the List interface.

List<LinkedList<Object[]>> myList = new ArrayList<LinkedList<Object[]>>();

回答2:

The declaration LinkedList<Object[]>[] means an array of lists of arrays - is that the intention? Assuming that it is, you create it with the syntax for creating arrays:

public LinkedList<Object[]>[] myArray = new LinkedList[ARRAY_SIZE];

This creates an array of the specified size (ARRAY_SIZE), each cell of which is null.

Note that:

• Since you can't create generic arrays in Java, as Hunter McMillen noticed, the right part omits the type of the LinkedList (i.e. "<Object[]>").
• I took the liberty of renaming the variable from myList to myArray, since it's an array and not a list.
• It's usually a good idea to use the interface (List) and not a specific implementation (LinkedList), unless you need to use methods specific to LinkedList.

So the line would look like this:

public List<Object[]>[] myArray = new List[ARRAY_SIZE];

来源：https://stackoverflow.com/questions/6961783/how-to-create-an-linkedlistobject