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// Interface ExceptionReporter
public interface ExceptionReporter {
  public void setExceptionReporter(ExceptionReporter er);
  public void report(Throwable exception);
}

// Class ExceptionReporters
public class ExceptionReporters implements ExceptionReporter {
  public ExceptionReporters(ExceptionReporter er) {
    /*/ Carry out initialization */
    // incorrectlyIncorrectly publishes the "this" reference
    er.setExceptionReporter(this);

  }

  public void report(Throwable exception) { /* default implementation */ }
  public final void setExceptionReporter(ExceptionReporter er) { 
    //* setsSets the reporter 
 */ }
}

// Class MyExceptionReporter derives from ExceptionReporters
public class MyExceptionReporter extends ExceptionReporters {
  private final Logger logger;
  
  public MyExceptionReporter(ExceptionReporter er) {
    super(er); // callsCalls superclass's constructor
    logger = Logger.getLogger("com.organization.Log");
  }

  public void report(Throwable t) {
    logger.log(Level.FINEST,"Loggable exception occurred",t);
  }
}

public class MyExceptionReporter extends ExceptionReporters {
  // ...
  public void setReporter(ExceptionReporter er) {
    super.setExceptionReporter(this);
  }
}

public class BadExceptionReporter implements ExceptionReporter {
  public BadExceptionReporter(ExceptionReporter er) { 
    er.setExceptionReporter(new ExceptionReporters(er) {
    public void report(Throwable t) {
      filter(t);
    }		
  });
}
  public void filter(Throwable t) { 
    //* filtersFilters sensitive exceptions */
  }

  public void report(Throwable exception) { 
    /*/ defaultDefault implementation */
  }

  public void setExceptionReporter(ExceptionReporter er) { 
    //* setsSets the reporter */
  }
}