Re: Why can nsmc, local classes or anonymous classes have static members ?

Arne Vajh?j wrote:


Perhaps I wasn't clear, becasue what I'm thinking counts instances
quite well, e.g.

    class Outer
    {
        class Inner
        {
            static int count;

            Inner()
            {
                count++;
            }
        }
    }

"count" willl give the number of Inner.Outer instances ever created,
regardless of the value of the enclosing Inner instance. Though in
fact what I've usually wanted a static method for is when Inner needs
a cache, e.g.

    class Outer
    {
        class Inner
        {
            static Map<String, Schema>schemas = new HashMap<String,
Schema>();
            private Schema schema;

            Inner(String namespace)
            {
                synchronized(schemas)
                {
                    schema = schemas.get(namespace);
                    if (schema == null)
                    {
                         schema = loadSchema(namespace);
                         schemas.put(namespace, schema);
                    }
                }
            }
        }
    }

Again, I want to use the same cache regardless of the value of the
enclosing instance.