Help,runtime exception when using oracle ses 11g

Question

development environment is myeclipse 8.5 , jdk1.6 , oracle ses 11g is installed on centos .
I use the query web service example in oracle ses 11g administrator's guide to test ses 11g.
I added wseeclient.jar,ant.jar and search_client.jar to my projects .
the project is compiled successfully, however, A runtime exception occured when runing the project :
Exception in thread "main" java.lang.NoClassDefFoundError: weblogic/descriptor/DescriptorManager
     at oracle.search.query.webservice.client.OracleSearchService.<clinit>(OracleSearchService.java:58)
     at client.SESClient.main(SESClient.java:8)
Caused by: java.lang.ClassNotFoundException: weblogic.descriptor.DescriptorManager
     at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
The code is listed blow :
package client;
import oracle.search.query.webservice.client.*;
public class SESClient {
     public static void main(String[] args) throws Exception {
          // runtime exception occured : java.lang.ClassNotFoundException: weblogic.descriptor.DescriptorManager
// when create the object OracleSearchService
          OracleSearchService stub = new OracleSearchService();
          stub.setSoapURL("http://59.77.132.154:7777/search/query/OracleSearch");
          OracleSearchResult result = stub.doOracleSearch("fzu site:www.fzu.edu.cn", 1,
                    Integer.MAX_VALUE, Boolean.TRUE, Boolean.TRUE, null, "zh",
                    "zh", Boolean.TRUE, null, null, null);
          int estimatedHitCount = result.getEstimatedHitCount().intValue();
          if (estimatedHitCount == 0)
               System.out.println("No Result!");
          else {
               ResultElement[] resElemArray = result.getResultElements();
               for (int i = 0; i < resElemArray.length; ++i) {
                    System.out.println(resElemArray.getTitle() + ":"
                              + resElemArray[i].getUrl());
                    System.out.println("-----------------------------------------------------------");

Answer 1

I have a reason to believe that my anti virus scanner is modifying the jar file.
I had initially downloaded the jar file from sourceforge. It had the com.iwss.... package.
Now i dowloaded the file in zip format and that package is not there in the zip file. But i have a new problem now.
My eclispe just crashed with the following error message.
JVM terminated. Exit code=1
D:\Oracle\product\10.1.0\Client_2\jre\1.4.2\bin\javaw.exe
-Xms40m
-Xmx256m
-jar C:\eclipse\startup.jar
-os win32
-ws win32
-arch x86
-launcher C:\eclipse\eclipse.exe
-name Eclipse
-showsplash 600
-exitdata 1bc_74
-vm D:\Oracle\product\10.1.0\Client_2\jre\1.4.2\bin\javaw.exe
-vmargs
-Xms40m
-Xmx256m
-jar C:\eclipse\startup.jar