Ok, found it. It's caused by the design of org.jgroups.blocks.MethodCall.
MethodCall is used to call a remote method and for this it provides an an serialized
(externalized) Version of the method's signature.
primitive Types are externalized using their primitive Class (e.g. Boolean.TYPE).
Lateron this is sent using org.jgroups.util.Util.objectToByteBuffer and retrieved on
the other side using org.jgourps.util.Util.objectFromByteBuffer() which make use of
ObjectOutputStream and ObjectInputStream.
the ObjectInputStream of SUNs JVM 1.3.1 doesn't support these primitive-types since it
uses a Class.forName() to resolve an Object's Class.
this code-to-reproduce runs well on SUNs JVM 1.4.2, but fails on SUNs JVM 1.3.1:
import java.io.*;
public class ObjectInputOutput {
public static void main(String[] args) {
try {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(baos);
oos.writeObject(Boolean.TYPE);
byte[] ba = baos.toByteArray();
ByteArrayInputStream bais = new ByteArrayInputStream(ba);
ObjectInputStream ois = new ObjectInputStream(bais);
System.out.println(ois.readObject());
} catch (Exception e) {
e.printStackTrace(System.out);
}
}
}
java com.bmw.test.ObjectInputOutput
->
java.lang.ClassNotFoundException: boolean
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:297)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:286)
at java.lang.ClassLoader.loadClass(ClassLoader.java:253)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:195)
at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:654)
at java.io.ObjectInputStream.inputClassDescriptor(ObjectInputStream.java:918)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:366)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236)
at com.bmw.test.ObjectInputOutput.main(ObjectInputOutput.java:27)
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