package org.jboss.book.jmx.ex0;import java.io.IOException;import org.apache.log4j.Logger;import org.jboss.util.Debug;/** A classes used to demonstrate various class loading issues * @author Scott.Stark@jboss.org * @version $Revision: 1.1 $ */public class ExCtx{   ExObj value;   public ExCtx() throws IOException   {      value = new ExObj();      Logger log = Logger.getLogger(ExCtx.class);      StringBuffer buffer = new StringBuffer("ctor.ExObj");      Debug.displayClassInfo(value.getClass(), buffer, false);      log.info(buffer.toString());      ExObj2 obj2 = value.ivar;      buffer.setLength(0);      buffer = new StringBuffer("ctor.ExObj.ivar");      Debug.displayClassInfo(obj2.getClass(), buffer, false);      log.info(buffer.toString());   }   public Object getValue()   {      return value;   }   public void useValue(Object obj) throws Exception   {      Logger log = Logger.getLogger(ExCtx.class);      StringBuffer buffer = new StringBuffer("useValue2.arg class");      Debug.displayClassInfo(obj.getClass(), buffer, false);      log.info(buffer.toString());      buffer.setLength(0);      buffer.append("useValue2.ExObj class");      Debug.displayClassInfo(ExObj.class, buffer, false);      log.info(buffer.toString());      ExObj ex = (ExObj) obj;   }   void pkgUseValue(Object obj) throws Exception   {      Logger log = Logger.getLogger(ExCtx.class);      log.info("In pkgUseValue");   }}