NullPointerException while getting context (WLS 8.1.5)

[mike]

I am getting the NullPointerException in the following code.

..........
private InitialContext getInitialContext() {
InitialContext initialCtx = null;
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY,
weblogic.jndi.WLInitialContextFactory");
env.put(Context.PROVIDER_URL, "t3://uuu.xxx.yyy.zzz:7001");

try {
/* 156*/ initialCtx = new InitialContext(env);
} catch (Exception e) {
...........
}
return initialCtx;
}
..........

Can anyone help me? I'm using WLS 8.1.5.

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java.lang.NullPointerException
at
weblogic.rjvm.RJVMManager.findExisting(Ljava/net/InetAddress;ILweblogic/protocol/Protocol;)Lweblogic/rjvm/RJVM;(RJVMManager.java:322)
at
weblogic.rjvm.RJVMManager.findOrCreateRemoteInternal(Ljava/net/InetAddress;ILjava/lang/String;)Lweblogic/rjvm/RJVM;(RJVMManager.java:206)
at
weblogic.rjvm.RJVMManager.findOrCreate(Ljava/net/InetAddress;ILjava/lang/String;)Lweblogic/rjvm/RJVM;(RJVMManager.java:180)
at
weblogic.rjvm.RJVMFinder.findOrCreateRemoteServer(Ljava/net/InetAddress;I)Lweblogic/rjvm/RJVM;(RJVMFinder.java:223)
at
weblogic.rjvm.RJVMFinder.findOrCreate(Z)Lweblogic/rjvm/RJVM;(RJVMFinder.java:188)
at
weblogic.rjvm.ServerURL.findOrCreateRJVM(Z)Lweblogic/rjvm/RJVM;(ServerURL.java:125)
at
weblogic.jndi.WLInitialContextFactoryDelegate.getInitialContext(Lweblogic/jndi/Environment;Ljava/lang/String;)Ljavax/naming/Context;(WLInitialContextFactoryDelegate.java:296)
at
weblogic.jndi.WLInitialContextFactoryDelegate.getInitialContext(Ljava/util/Hashtable;)Ljavax/naming/Context;(WLInitialContextFactoryDelegate.java:239)
at
weblogic.jndi.WLInitialContextFactory.getInitialContext(Ljava/util/Hashtable;)Ljavax/naming/Context;(WLInitialContextFactory.java:135)
at
javax.naming.spi.NamingManager.getInitialContext(Ljava/util/Hashtable;)Ljavax/naming/Context;(NamingManager.java:662)
at
javax.naming.InitialContext.getDefaultInitCtx()Ljavax/naming/Context;(InitialContext.java:243)
at
javax.naming.InitialContext.init(Ljava/util/Hashtable;)V(InitialContext.java:219)
at
javax.naming.InitialContext.<init>(Ljava/util/Hashtable;)V(InitialContext.java:195)
at
myPackage.MyClass.getInitialContext()Ljavax/naming/InitialContext;(MyClass.java:156)
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