The weblogic.jar has the javax.management.*, it is conflict with rt.jar's

Question

Hello guys:
I want to use JMX 1.0 to communicate with weblogic 8.1. The client should be run in the Java 1.5
It throw
java.io.InvalidClassException: javax.management.ObjectName; local class incompatible:
stream classdesc serialVersionUID = -5467795090068647408, local class serialVersionUID = 1081892073854801359
java.io.InvalidClassException: javax.management.ObjectName; local class incompatible:
stream classdesc serialVersionUID = -5467795090068647408, local class serialVersionUID = 1081892073854801359I know the reason is java 1.5 has JMX 1.2 in it.
So how can I program a class loader to load the weblogic.jar classes in? I have tried a lot of code, but failed.
Is there any sample here?
I want to use the JMX 1.0 in weblogic.jar at jdk1.5 run time
Thanks a lot,
Qiang

Answer 1

Thanks for your reply,
But I have tried your sugestions.
I use
Thread.currentThread().setContextClassLoader(cl);I am not sure whether it is correct.
import java.io.IOException;
import java.net.URL;
import java.net.URLClassLoader;
import java.security.AllPermission;
import java.security.CodeSource;
import java.security.PermissionCollection;
import java.security.Permissions;
import com.sun.org.apache.bcel.internal.util.ClassPath;
public class NonDelegatingClassLoader extends URLClassLoader {
     private final PermissionCollection permissions = new Permissions();
          permissions.add(new AllPermission());
     public NonDelegatingClassLoader(URL[] urls) {
          super(urls);
     @Override
     protected synchronized Class<?> loadClass(String name, boolean resolve)
               throws ClassNotFoundException {
          // Bootstrap classes must be loaded by the bootstrap ClassLoader
          if (name.startsWith("javax.management")
                    || name.startsWith("com.sun.jmx")
                    || name.startsWith("com.sun.management")
                                                                || name.startsWith("weblogic.")
               Class c = findLoadedClass(name);
               if (c == null) {
                    try {
                         c = findClass(name);
                    } catch (ClassNotFoundException e) {
                         byte[] classBytes;
                         try {
                              ClassPath cp = new ClassPath();
                              classBytes = cp.getBytes(name);
                         } catch (IOException e1) {
                              throw new ClassNotFoundException(name);
                         c = defineClass(name, classBytes, 0, classBytes.length);
               if (resolve) {
                    resolveClass(c);
               return c;
          } else {
               return getClass().getClassLoader().loadClass(name);
     protected PermissionCollection getPermissions(CodeSource codesource) {
          return permissions;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Iterator;
import java.util.Set;
import javax.naming.Context;
import org.omg.CORBA.TIMEOUT;
import weblogic.jndi.Environment;
import weblogic.management.MBeanHome;
import weblogic.management.runtime.JVMRuntimeMBean;
public class QueryWLSThread extends Thread {
     private String m_url = "";
     private String m_username = "weblogic";
     private String m_password = "weblogic";
     private int m_heapUT = -1;
     private Timer m_timer = null;
     public QueryWLSThread(String url, String username, String password,
               int timeOut) {
          //System.setProperty("jmx.serial.form", "1.0");
          m_url = url;
          m_username = username;
          m_password = password;
          m_timer = new Timer(timeOut, this);
          try {
               URL[] urls = { new URL("file:/f:/Downloads/weblogic.jar") };
               ClassLoader cl = new NonDelegatingClassLoader(urls);
               Thread.currentThread().setContextClassLoader(cl);
          } catch (MalformedURLException e) {
               // TODO // block
               e.printStackTrace();
     }It throw out
java.lang.NoSuchMethodException: weblogic.jndi.internal.ServerNamingNode_811_WLStub.<init>(weblogic.rmi.internal.StubInfo)
     at java.lang.Class.getConstructor0(Unknown Source)
     at java.lang.Class.getConstructor(Unknown Source)
     at weblogic.rmi.internal.StubGenerator.generateStub(StubGenerator.java:804)
     at weblogic.rmi.internal.StubGenerator.generateStub(StubGenerator.java:790)
     at weblogic.rmi.extensions.StubFactory.getStub(StubFactory.java:79)If I do not check the name with "weblogic."
it will throw out method not found.
If I do not set the system env, it is the same I still use the jdk 1.5 classes.
I am not sure how to load my class without loading the jdk1.5's
I also use the java -xbootpath/a:
Cannot fix this currently.