Question

I have an array of String which correspond to the names of Classes in one of my packages.

For example, lets say I had an ArrayList that contained three items: “A1”, “A2”, “A3”.

I would like to create instances of these classes using code such as:

    Class<?> objectToCreate = (Class<?>) MyStaticClass.class.getClassLoader().loadClass(objectToCreate);
    <?> objectCreated = objectToCreate.newInstance();

Such that, after looping through the above lines of code, I would have one instance of an A1 class, one instance of an A2 class, and one instance of an A3 class.

Does anybody know if this is possible? I realise this is “let me Google that for you” territory but I’m struggling to think of the noun to query that would give me the answer!

Answer 1

You need the ? to be something other than a wildcard, meaning it has to be defined somewhere. Your options are on the method or the class. I expect method will work, so try wrapping this in a method, like so:

public <T> T create(String name) {
   Class<T> objectToCreate = (Class<T>) MyStaticClass.class.getClassLoader().loadClass(objectToCreate);
   T objectCreated = objectToCreate.newInstance();
   return objectCreated;
}