Eclipse can not import package

[Amy Adams]

Hello,
I have a class in a package that has the name of each class in another package as a combobox, so I withdraw after selecting a user name string in my class. After that, I want to access a method (common to each class of another package).
Here is my part of the code

		String cnm = "Max"; / / An example of one of the names of classes
	    try {
	    	Class cl = Class.Class.forName(cnm);
optionsV = cl.ListOptions(); / / This method returns a vector (optionV)
	    } catch (Final Exception ex) {
	    	throw new Exception(Java Class not found: " + cnm);
	    }

The problem is that Eclipse is not importing the package , it gives me: The method ListOptions () is undefined for the type Class. If you guys have a solution for this then it would be great. Thanks in advance.

[cyber-noob]

Hello,
Here are some tips for you
1. I suppose "ListOptions" is a static method, if not impossible to draw without making a new ().

2. Eclipse has nothing to do. It is the compiler that does not agree, for the simple reason that Java is not a dynamic language => requires that the method exists in the class that you use. Right now, your object "myClass" belongs to the class "Class" (class-based language). This does obviously not your personal method "ListOptions ()".
I think you can use the introspection to call the method.

[NetWorkInG]

Hello,
I agree with the above post and as said that introspection can solve this problem, here is what I am trying to explain

Use introspection to call the method.
Class cl = Class.Class.forName(ClassName);
Method mth = cl.getDeclaredMethod("ListOptions",null);
Option rtn = (Option) mth.invoke(null, null);

Hope this solution will help you. If you have any more queries in this topic then do post back.

[ISAIAH]

Hello,
Even I have some what similar problem with my code. I have tried you solution, it works by cons have full eclipse of warning, however, all is between a try / catch.

Line 1: Class is a raw type. References to generic type Class <T> should be parametrized

Line 2: The argument of type null should explicitly be cast to Class [] for the invocation

Line 3: Type safety: Unchecked cast from Object to Option

Now my question is that is that this may cause problem later?

[WinDoWLoCuS]

Hello,

Class <?> cl = Class.Class.forName(ClassName);
Method mmth = myClass.getDeclaredMethod("ListOptions",(Class[])null);
Option rtn = (Option) mmth.invoke(null, (Object[])null);

Ok, that should leave only the warning "Type safety. The key is that introspection, risks are present. A better solution is to forget the introspection and use standard OO patterns (strategy, factory, ...). I guess you are getting the point what I am trying to explain here.