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/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
    class GenericClass<T> {
    }
 
    class RegisterHandler<T> {
        public void register( Class<T> klazz ) {
            // do something
        }
    }
 
    class GenericClassRegisterHandler extends RegisterHandler<GenericClass<?>> {
    }
 
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
	}
 
    public static void registerAll() {
        // ...
        new GenericClassRegisterHandler().register( GenericClass.class );
        // ...
    }
}

Main.java:30: error: method register in class RegisterHandler<T> cannot be applied to given types;
        new GenericClassRegisterHandler().register( GenericClass.class );
                                         ^
  required: Class<GenericClass<?>>
  found: Class<GenericClass>
  reason: actual argument Class<GenericClass> cannot be converted to Class<GenericClass<?>> by method invocation conversion
  where T is a type-variable:
    T extends Object declared in class RegisterHandler
1 error

Standard output is empty