JRE classpath not pointing to System classpath

Question

I would like to know if there is any way to configure the JRE classpath to make it point to the System classpath. I am executing an applet that tries to load a class stored in the file system, whose path (C:\Pruebas\ClassLoader\classes) has been previously added to the System classpath.
Of course, when JRE loads the applet and tries to look for the class, a ClassNotFoundException is launched. This is the classpath returned back by JRE when retrieving java.class.path property : D:\ARCHIV~1\Java\JRE16~1.0\classes ..... completely different from the System classpath: %AXIS_1_2_1_CLASSPATH%;%JRE_HOME%;C:\Pruebas\ClassLoader\classes.
If I store the requested class into D:\Archivos de programa\Java\jre1.6.0\classes then the applet launched through JRE founds the class without any inconvenience ... but, of course, neither me nor the clients want to store it there.
Here follows the piece of code that loads the class and calls a testing method.
ClassLoader loader = ClassLoader.getSystemClassLoader();
Class clase = loader.loadClass("ImpresionSab");
Constructor constructor = clase.getConstructor( new Class[] {} );
Object impresionSab = constructor.newInstance( new Object[] {} );
Method metodo = clase.getMethod("decirHola", null);
Object respuesta = metodo.invoke(impresionSab, null);
if (respuesta instanceof String) {
System.out.println("Respuesta: " + (String)respuesta);
Any help would be much appreciated.

Answer 1

There is no problem at all with URLClassLoader, of course ... and YES is the response: I have heard about it, and even used.
Stupid questions, and mine was due to my ignorance -nowadays I know why JRE classpath differs from the System classpath- are supposed to be posted here in order to be answered properly ... I mean with kindness and clarifying a reasonable doubt.
It would have help too much, and I am responsible of such confussion, to say that the applet was not mine and can not be changed at all, so this kind of tricky was needed ... but a polite response would have been much appreciated, even if it had not solved my problem.
However, small divinities should keep appart from human doubts, and should not humiliate themselves answering such stupidities ... because that was not only my case, but also the case of some other users in the forum. The aliases translation of this goodness clarifies itself its behave.
Quo usque tandem abutere, Catilina, patientia nostra?
But, more important, for users of JRE 1.4.2, the right syntax will be something like
javaplugin.jre.params=-Djava.class.path\=C\:\\Pruebas\\ClassLoader\\classes
Rgds.