Question

Possible Duplicate:
Passing a class (“Country.class”) as an argument in Java

I am trying to write a generic save function for Amazon Web Service’s DynamoDB.

Currently I have:

public void save(????? classType, AmazonDynamoDBItem item)
{
    try
    {
        DynamoDBMapper mapper = new DynamoDBMapper(_dynamoDB);
        ????? object = mapper.load(classType, item.getKey());
        mapper.save(object);
    }
    ...
}

I’m not quite sure how to make a signature that can accept something like (for exmple) String.class.

What do I need to put into the ????? to make this function work?

Answer 1

Try something like this:

public static <E> void save(Class<E> classType)
{
    try {
        E object = classType.newInstance();
        System.out.println(object.getClass());
    }
    catch (Exception e) {
    }
}