Help with loading dynamic classes ..need help please

Question

i'm trying to design a program where by i can load dynamic classes
the problem i'm getting is that only one class is loading.
classes are loaded by their names,and index numbers of public methods from a linklist
.When the program runs only the first class is ever loaded and only the methods of that class ..
help please
//class loader
import java.lang.reflect.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
public class Test2 extends Thread
     public Class c;
     public Class Ray;
     public Class[] x;
     public static Object object = null;
     public Method[] theMethods;
     public static Method[] method,usemethod;
     public int methodcount;
     public static int MethodCt;     
     public static JList list;
public Method[] startClass(String SetMethodName)
     try
          c = Class.forName(SetMethodName);
          object = c.newInstance();
          theMethods = c.getDeclaredMethods();
          // number of methods
          //methodcount = theMethods.length;
     catch (Exception e)
          e.printStackTrace();
// return the array then invoke the particular method later
return theMethods ;
public void RunMethod(Method[] SomeMethod, int methodcount)
     try
          SomeMethod[methodcount].invoke( object,null );
     catch (Exception e)
          e.printStackTrace();
// end class loader
//main calling program
import java.awt.*;
import java.awt.event.*;
import javax.swing .*;
import java.lang.reflect.*;
public class JFMenu extends JFrame
     public static JMenu pluginMenu;
     public static JMenuBar bar;
     public static final Test2 w = new Test2();
public static Method[] setmethod;
private static ClassLinkList startRef = null;
private static ClassLinkList linkRef3 = null;
private static ClassLinkList startRef2 = null;
private String ClassName,ShortCut;
private int MethodNumber;
private JMenuItem PluginItem;
     JFMenu()
          super (" JFluro ");     
          JMenu fileMenu = new JMenu("File");
          fileMenu.setMnemonic('F');
          JMenuItem exitItem = new JMenuItem("Exit");
          exitItem.setMnemonic('X');
          fileMenu.add(exitItem);
          exitItem.addActionListener
               new ActionListener()
                    public void actionPerformed(ActionEvent event )
                         System.exit(0);
          JMenu pluginMenu = new JMenu("Plugins");
          pluginMenu.setMnemonic('P');
          startRef = new ClassLinkList ("Hello","Hello ",2,1926,"Painter");
          addToList("Foo","Foo ",0,1930,"Author");
          while (startRef.linkRef5 != null)
               //pluginMenu.addSeparator();
               ClassName = startRef.linkRef5.className;
               ShortCut = startRef.linkRef5.shortcutName;
MethodNumber = startRef.linkRef5.methodNumber;
AddMenuItem(pluginMenu,ShortCut,ClassName,MethodNumber);
               startRef.linkRef5 = startRef.linkRef5.next;
          // create menu bar and add JFMenu window to it
          JMenuBar bar = new JMenuBar();
          setJMenuBar(bar);
          bar.add(fileMenu);
          bar.add(pluginMenu);
          //attributes for JFMenu frame
          setSize(500,200);
          setVisible(true);
     }// end JFMenu constructor
     public void AddMenuItem(JMenu MainMenu, String shortcut,String className, final int methodCount )
          if (MainMenu==null)
               return;
          //JMenuItem item;
          JMenuItem item = new JMenuItem(shortcut);
          MainMenu.add(item);
          setmethod = w.startClass(className);
          item.addActionListener
               new ActionListener()
                    public void actionPerformed(ActionEvent event )
                         w.RunMethod(setmethod,methodCount);
          //item.addActionListener(ij);
     public JMenuItem AddMenuItem2(JMenu MainMenu, String shortcut)
          //if (MainMenu==null)
          //     return Main;
          //JMenuItem item;
          JMenuItem item = new JMenuItem(shortcut);
          MainMenu.add(item);
          //setmethod = w.startClass(className);
          //item.addActionListener(this);
               new ActionListener()
                    public void actionPerformed(ActionEvent event )
                         w.RunMethod(setmethod,methodCount);
          //item.addActionListener(ij);
     return item;
     public void ReloadMenu(JMenuBar Bar, JMenu PluginMenu)
          if (Bar==null)
               return;
          //     setJMenuBar(Bar);
          Bar.add(PluginMenu);
          //item.addActionListener(ij);
public static void main (String args[])
          JFMenu menapp = new JFMenu();
public static void addToList(String clname, String shcutname, int metnumber, int year2,
                              String description) {
     // Create instance of class ClassLinkList
ClassLinkList newRef = new ClassLinkList(clname,shcutname,metnumber,year2,
                                   description);
// Add to linked list;
     startRef = startRef.addRecordToLinkedList(newRef);
// end main calling program
class Hello extends Thread
public int getNum()
System.out.println("I can be ");
return 5;
public void rayshowName()
System.out.println("anything i want ");
public void rayshowName3()
System.out.println("to be ");
class Foo extends Thread
public int getNum()
System.out.println("IMHOFF");
return 5;
public void rayshowName()
System.out.println("raYMOND");
// FAMOUS PERSONS LINKED LIST EXAMPLE
// Frans Coenen
// Saturday 15 January 2000
// Depaertment of Computer Science, University of Liverpool
class ClassLinkList {
/* FIELDS */
public String className;
public String shortcutName;
public int methodNumber;
public int yearOfDeath;
public String occupation;
public ClassLinkList next = null;
public ClassLinkList linkRef5 = this;
public ClassLinkList startRef = null;
/* CONSTRUCTORS */
/* FamousPerson constructor */
public ClassLinkList(String classname, String shortcutname, int methodnumber, int year2,
                              String description) {
     className = classname;
     shortcutName = shortcutname;
     methodNumber = methodnumber;
     yearOfDeath = year2;
     occupation = description;
     next = null;
/* METHODS */
/* Output famous person linked list */
public void outputClassLinkedList()
     //public ClassLinkList outputClassLinkedList() {
     ClassLinkList linkRef = this;
     // Loop through linked list till end outputting each record in turn
while (linkRef != null)
     //System.out.println(linkRef5);
     System.out.println(linkRef.className + ", " + linkRef.shortcutName +
               " (" + linkRef.methodNumber + "-" + linkRef.methodNumber +
               "): " + linkRef.occupation);
     linkRef = linkRef.next;     
//return linkRef;
//public String ShowCasname()
//return String ;     
/* Add a new record to the linked list */
public ClassLinkList addRecordToLinkedList(ClassLinkList newRef) {
     ClassLinkList tempRef, linkRef;
     // Test if new person is to be added to start of list if so return
if (newRef.testRecord(this) ) {
     newRef.next = this;
     return(newRef);
     // Loop through remainder of linked list
     tempRef = this;
     linkRef = this.next;
     while (linkRef != null) {
     if (newRef.testRecord(linkRef)) {
     tempRef.next = newRef;
          newRef.next = linkRef;
          return(this);
     tempRef = linkRef;
     linkRef = linkRef.next;
// Add to end
tempRef.next = newRef;
     return(this);
/* Delete a record from the linked list given the first and last name. Four
posibilities:
1) Record to be deleted is at front of list
2) Record to be deleted is at end of list
3) Record to be deleted is in middle of list
4) Record not found. */
public ClassLinkList deleteRecord(String lName, String fName) {
ClassLinkList tempRef, linkRef;
// Record at start of list
if ((this.className == lName) & (this.shortcutName == fName))
     return(this.next);
     // Loop through linked list to discover if record is in middle of list.
     tempRef = this;
linkRef = this.next;
while (linkRef != null) {
     if ((linkRef.className == lName) & (linkRef.shortcutName == fName)) {
tempRef.next = linkRef.next;
return(this);
tempRef = linkRef;
linkRef = linkRef.next;
// Record at end of list, or not found
if ((linkRef.className == lName) & (linkRef.shortcutName == fName))
                    linkRef = null;
     else System.out.println("Record: " + lName + " " + fName + " not found!");
     return(this);
/* TEST METHODS */
/* Test whether new record comes before existing record or not. If so return
true, false otherwise. */
private boolean testRecord(ClassLinkList existingRef) {
     int testResult = className.compareTo(existingRef.className);
     if (testResult < 0) return(true);
     else {
     if ((testResult == 0) & (shortcutName.compareTo(existingRef.shortcutName) < 0 ))
                         return(true);
     // Return false
     return(false);
     public void addToList(String clname, String shcutname, int metnumber, int year2,
                              String description)
     // Create instance of class Famous Person
ClassLinkList newRef = new ClassLinkList(clname,shcutname,metnumber,year2,
                                   description);
// Add to linked list;
     startRef = startRef.addRecordToLinkedList(newRef);

Answer 1

I have a similar problem. I am writing a program to read the class names from database and instantiate several classes which extends from ServiceThread (an abstract class extending from Thread).
rs = pStmt.executeQuery();
while(rs.next()) {
String threadclassname = rs.getString("classname").trim();
try{
ServiceThread threadinstance = (ServiceThread)Class.forName(threadclassname).newInstance();
}catch ...
So far, only the first class is ever instantiated and runs fine. But subsequent classes do not even get pass the "... ... Class.forName(...).newInstance();" line.
Funny thing is that there are also no exceptions. The JVM just seem to hang there.