“Cannot create generic array of ..” - how to create an Array of Map?

Question

I would like to use simpleJdbcInsert class and executeBatch method

public int[] executeBatch(Map[] batch)

http://stati

Answer 1

From Oracle tutorial [sic]:

You cannot create arrays of parameterized types. For example, the following code does not compile:

List[] arrayOfLists = new List[2];  // compile-time error

The following code illustrates what happens when different types are inserted into an array:

Object[] strings = new String[2];
strings[0] = "hi";   // OK
strings[1] = 100;    // An ArrayStoreException is thrown.

If you try the same thing with a generic list, there would be a problem:

Object[] stringLists = new List[];  // compiler error, but pretend it's allowed
stringLists[0] = new ArrayList();   // OK
stringLists[1] = new ArrayList();  // An ArrayStoreException should be thrown,
                                            // but the runtime can't detect it.

If arrays of parameterized lists were allowed, the previous code would fail to throw the desired ArrayStoreException.

To me, it sounds very weak. I think that any programmer with a sufficient understanding of generics, would be perfectly fine, and even expect, that the ArrayStoredException is not thrown in such case.

Even more, most programmers will simply do:

List arrayOfLists = (List) new List[2];

which will put them in exactly the same risk of ArrayStoreException not thrown.