Please help how to set/get a class object in hashtable or hashmap?

Question

Hi, everybody.
I'd like to generate a class-object list in hashtable.
However, compilation is error. Here is my code:
Hashtable ht = new Hashtable();
Class tmp_obj;
tmp_obj = Class.forName("my_class_name_1");
ht.put("my_class_name_1", tmp_obj);
tmp_obj = Class.forName("my_class_name_2");
ht.put("my_class_name_2", tmp_obj);
Class selected_object = ht.get("my_class_name");
^here compilation error: incompitable types
Could anybody tell me where is wrong in my code and how to
correct it?
Thank you in advance.
Jeff

Answer 1

Look at the javadoc for Hashtable. The get method returns an Object. You will need to cast it to a Class object.
Class selected_object = (Class)ht.get( "my_class_name" );If you are using JDK5.0, then you should look up generics.