Dynamically instantiate a Ruby class similar to Java

Question

How can this line in Java be translated to Ruby:
String className = "java.util.Vector";
...
Object o = Class.forName(className).newInstance();

Thanks!

Answer 1

Object::const_get('String').new()

Answer 2

If you're using ActiveSupport (i.e. Rails), there is a method added to String that does this:

"String".constantize.new