URLClassLoader - with JAR Files- - - Please Help

Question

Hi all,
I have two seperate JAR files which contain same files but different progressive versions.JAR 1 is version V1 and JAR 2 is Version V1.1
I have a program which loads classes from these two JARS and runs certain comparsions on them.CODE IS SHOWN and SO is ERROR.PLEASE HELP and ADVISE.Im on a UNix box using JDK 1.3.
CODE:
====
1.In my main i define the TWO JARS PATHS and the item to compare called ENTITYNAME as:
String jarFile1 = "/xenv/GFINet_Java/6.2_Z1/1.3.X/gfinet_entities.jar";
String jarFile2 = "/xenv/GFINet_Java/6.1_Y1/1.3.X/gfinet_entities.jar";
String entityName = "gfinet.entities.GFIBasketEntity";
2.Then i call the function
EntityVersionComparator evc = new EntityVersionComparator();
evc.test(jarFile1, jarFile2, entityName);
3.Test function loads the JARS
private void test(String jarFile1, String jarFile2, String entityName) throws Exception {
URLClassLoader jar1 =
(URLClassLoader)newClassLoader(jarFile1);
URLClassLoader jar2 =
(URLClassLoader)newClassLoader(jarFile2);
4. Load that item ENTITYNAME FROM JAR.
// load GFIBasketEntity from Jar1
GFIBaseEntity ent1 =
     (GFIBaseEntity)loadClass(jar1, entityName).newInstance();
PROBLEM ERRORS:
==============
Exception in thread "main" java.net.MalformedURLException : no
protocol :/xenv/GFINet_Java/sun4/6.2.Z2/Solaris8/3.3.2/1.3.X/lib/gfinet_entities.jar
at java.net.URL.<init>(URL.java:473)
at java.net.URL.<init>(URL.java:376)
at java.net.URL.<init>(URL.java:330)
at EntityVersionComparator.newClassLoader(EntityVersionComparator.java:143)
at EntityVersionComparator.test(EntityVersionComparator.java:88)
at EntityVersionComparator.main(EntityVersionComparator.java:74)
WHATS GOING ON..Is there something wrong with the path?Pls advise
jason

Answer 1

I also in my CODE have:
private ClassLoader newClassLoader(String path)
throws MalformedURLException
{ URL url = new URL(path);
return new URLClassLoader(new URL[]url);