安装 avasty greenfoot 后，一个简单的 java 程序来学习 java 在我的 windows 8 机器上不起作用。在日志中提供了更多信息，但我作为java初学者并不真正理解这个问题！我希望有人能帮助我！
Greenfoot run started: Thu Oct 24 17:29:03 CEST 2013
Greenfoot version: 2.3.0
Java version 1.7.0_21
Virtual machine: Java HotSpot(TM) Client VM 23.21-b01 (Oracle Corporation)
Running on: Windows 8 6.2 (x86)
Java Home: E:\jdk\jre
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Internal error: Could not launch RMI server
Exception message: Connection refused to host: 127.0.0.1; nested exception is:
java.net.ConnectException: Connection timed out: connect
java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is:
java.net.ConnectException: Connection timed out: connect
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:619)
at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:216)
at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:202)
at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:340)
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
at java.rmi.Naming.rebind(Naming.java:177)
at rmiextension.BlueJRMIServer.<init>(BlueJRMIServer.java:111)
at rmiextension.RMIExtension.startup(RMIExtension.java:60)
at bluej.extmgr.ExtensionWrapper.safeStartup(ExtensionWrapper.java:533)
at bluej.extmgr.ExtensionWrapper.newExtension(ExtensionWrapper.java:209)
at bluej.extmgr.ExtensionsManager.loadDirectoryExtensions(ExtensionsManager.java:164)
at bluej.extmgr.ExtensionsManager.loadExtensions(ExtensionsManager.java:100)
at bluej.extmgr.ExtensionsManager.getInstance(ExtensionsManager.java:61)
at bluej.Main.processArgs(Main.java:179)
at bluej.Main.access$000(Main.java:55)
at bluej.Main$1.run(Main.java:97)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:727)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:688)
at java.awt.EventQueue$3.run(EventQueue.java:686)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:697)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
Caused by: java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:69)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:157)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391)
at java.net.Socket.connect(Socket.java:579)
at java.net.Socket.connect(Socket.java:528)
at java.net.Socket.<init>(Socket.java:425)
at java.net.Socket.<init>(Socket.java:208)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:40)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:146)
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:613)
... 29 more
Commencing network test...
Local host address = 212.5.13.214
Local host ip = 212.5.13.214
Addresses for 'localhost':
-> 127.0.0.1
-> 0:0:0:0:0:0:0:1
(end of list).
Creating unbound server socket...
Successful.
Creating server socket bound to 127.0.0.1...
Successful.
Attempting to connect to 127.0.0.1:52317 with NO_PROXY...
(!!) Couldn't accept connection: Accept timed out
(!!) Exception class: java.net.SocketTimeoutException
Creating server socket bound to 0:0:0:0:0:0:0:1...
Successful.
Attempting to connect to 0:0:0:0:0:0:0:1:52319 with NO_PROXY...
Successful.
Attempting to connect to 0:0:0:0:0:0:0:1:52319...
Successful.
Creating server socket bound to 212.5.13.214...
Successful.
Attempting to connect to 212.5.13.214:52322 with NO_PROXY...
(!!) Couldn't accept connection: Accept timed out
(!!) Exception class: java.net.SocketTimeoutException
Network test complete.
(!!) Couldn't connect to local address: Connection refused: connect
(!!) Exception class: java.net.ConnectException
(!!) Couldn't connect to local address: Connection refused: connect
(!!) Exception class: java.net.ConnectException