Method injection

I am invoking a method from a class I obtained by using a URLClassLoader. Which is giving me the following exception.

Quote:

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java.lang.reflect.InvocationTargetException

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The line that gives this exception is

Code Java:

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public static Object invoked(String aClass, String aMethod, Class[] params,
			Object[] args) throws Exception {
 
		Method m = mine.getDeclaredMethod(aMethod, params);
		Object i = mine.newInstance();
		Object r = m.invoke(i, args);//this line :(
		return r;
	}

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and is called here...

Code Java:

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try {
				Object a = invoked("Script name", "method4", new Class[] {},
 
				new Object[] {});
				boolean b = (Boolean) a;
 
				return b;
			} catch (Exception e2) {
				e2.printStackTrace();
			}

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Edit: The class name isn't used, avoiding any confusing.

The method has no parameters either, why is it giving that exception and what does it mean?

Its a bit unclear to me what the context is here, what is mine? Passing a regular object to the reflection method will not give you access to a method named 'method4'. Might be best to post a short, compilable, runnable example that demonstrates the problem.