Any one who has read chap15 of Thinking in JAVA,2nd Ed. please take a look.

Question

I'm testing the RMI example in chap15.When I run the PerfectTime class I always get an error message(xuke is my computer's name,and I've already conncetted to the ISP and started the registry server and produced the stub&skeleton classes as the book said):
java.security.AccessControlException: access denied (java.net.SocketPermission xuke resolve)
     at java.security.AccessControlContext.checkPermission(AccessControlContext.java:267)
     at java.security.AccessController.checkPermission(AccessController.java:394)
     at java.lang.SecurityManager.checkPermission(SecurityManager.java:540)
     at java.lang.SecurityManager.checkConnect(SecurityManager.java:1037)
     at java.net.InetAddress.getAllByName0(InetAddress.java:554)
     at java.net.InetAddress.getAllByName0(InetAddress.java:535)
     at java.net.InetAddress.getByName(InetAddress.java:444)
     at java.net.Socket.<init>(Socket.java:95)
     at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:20)
     at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:115)
     at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:494)
     at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:185)
     at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:169)
     at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:313)
     at sun.rmi.registry.RegistryImpl_Stub.bind(Unknown Source)
     at java.rmi.Naming.bind(Naming.java:106)
     at PerfectTime.main(PerfectTime.java:31)
Exception in thread "main" Process terminated with exit code 1

Answer 1

Use a policy file, in which you grant acees permissions, when starting your applicaiton:
grant {
permission java.net.SocketPermission "*:1024-65535", "connect,resolve";
permission java.net.SocketPermission "*:80-65535", "connect,accept";
Here you have more details:
http://java.sun.com/docs/books/tutorial/rmi/running.html