Does constructing Object streams read/write data on the underlying stream?

Question

I was hoping to create a class that implemented externalizable and just have the read and write external methods handle all the specifics. My client is Java and the server is legacy but always creating the ObjectInputStream hangs no matter if I construct it before or after the ObjectOutputStream. See the following basic code where s is an open socket.
OutputStream os = s.getOutputStream();
InputStream is = s.getInputStream();
outStream = new ObjectOutputStream( os );
inStream = new ObjectInputStream( is );
The last line always hangs??
Thanks, S.D.

Answer 1

I just read this in a link to another section of the docs.
The single-argument ObjectInputStream constructor requires an InputStream. The constructor calls readStreamHeader to read and verifies the header and version written by the corresponding ObjectOutputStream.writeStreamHeader method. If a security manager is installed, this constructor checks for the "enableSubclassImplementation" SerializablePermission when invoked directly or indirectly by the constructor of a subclass which overrides the readFields and/or readUnshared methods.
Boooo, is there some way of disabling this?
Thanks, S.D.