An object of this class is thrown by
Method.invoke( ) and
Constructor.newInstance( ) when an exception is
thrown by the method or constructor invoked through those methods.
The InvocationTargetException class serves as a
wrapper around the object that was thrown; that object can be
retrieved with the getTargetException( ) method.
In Java 1.4 and later, all exceptions can be
"chained" in this way, and
getTargetException( ) is superseded by the more
general getCause( ) method.

public class InvocationTargetException extends Exception {
// Public Constructors
public InvocationTargetException(Throwable target);
public InvocationTargetException(Throwable target, String s);
// Protected Constructors
protected InvocationTargetException( );
// Public Instance Methods
public Throwable getTargetException( );
// Public Methods Overriding Throwable
1.4 public Throwable getCause( );
}