ClassType.newInstance() does not works.

Question

I tried to use ClassType.newInstance() with user defined types but doesn't works. It seems that instantiates only Sun Classes (sun.*, java.*). Can anyone give me an hint for to overcome this logic?
Thanx.

Answer 1

The debugee code is
package P;
public class A
     public A()
     public static void main( String[] args ) throws Exception
          for ( int i=0; i<16384; ++i )
               Thread.sleep(2000);
               System.out.println( "main: " + i );
The snippet of debugger code is
     public void init( String classname )
          try
               List allThreads = this.allThreads();
               VirtualMachine vm = this.vm();
               ThreadReference threadReference = null;
               for ( Iterator i = allThreads.iterator(); i.hasNext(); )
                    threadReference = (ThreadReference) i.next();
                    // *todo: scegliere in maniera pi? oculata il thread cui rubare i cicli (forma di "computazione parassita")
                    // il thread della GC?               
                    if ( threadReference.name().equals( "main" ) )
                         break;
               assert threadReference != null;
               System.out.println( "" + threadReference );
               // cerca la classe da istanziare
               List instance_class_singleton = vm.classesByName( classname );
               System.out.println( classname + "" + instance_class_singleton.size() );
//               assert instance_class_singleton.size() == 1;
               ClassType instance_class = (ClassType) instance_class_singleton.get( 0 );
               System.out.println( "" + instance_class );
               Method instance_constructor = instance_class.concreteMethodByName(  "<init>", "()V" );
               System.out.println( "" + instance_constructor );
               // new
               ObjectReference instance = (ObjectReference) instance_class.newInstance( threadReference, instance_constructor, new ArrayList(), 0 );
               System.out.println( "" + instance );
          catch( Exception e ) { System.out.println( ""+e ); }
The init() method works with a class of the Sun (sun.*, java.*) as argument, but jams with the class "P.A".
No exception/traceback. I'm using Mac OS X.
Thanks