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Problems w/ Eclipse

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When running code in Eclipse, the console outputs an incredibly intimidating error message:

Activation.main: warning: sun.rmi.activation.execPolicy system
property unspecified and no ExecPermissions/ExecOptionPermissions
granted; subsequent activation attempts may fail due to unsuccessful
ExecPermission/ExecOptionPermission permission checks. For
documentation on how to configure rmid security, refer to:


the first time I run anything and

Activation.main: an exception occurred: Port already in use: 1098; nested exception is:
java.net.BindException: Address already in use: JVM_Bind
java.rmi.server.ExportException: Port already in use: 1098; nested exception is:
java.net.BindException: Address already in use: JVM_Bind
at sun.rmi.transport.tcp.TCPTransport.listen(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport.exportObject(Unknown Source)
at sun.rmi.transport.tcp.TCPEndpoint.exportObject(Unknown Source)
at sun.rmi.transport.LiveRef.exportObject(Unknown Source)
at sun.rmi.server.UnicastServerRef.exportObject(Unknown Source)
at sun.rmi.registry.RegistryImpl.setup(Unknown Source)
at sun.rmi.registry.RegistryImpl.<init>(Unknown Source)
at java.rmi.registry.LocateRegistry.createRegistry(Unknown Source)
at sun.rmi.server.Activation.main(Unknown Source)
Caused by: java.net.BindException: Address already in use: JVM_Bind
at java.net.PlainSocketImpl.socketBind(Native Method)
at java.net.PlainSocketImpl.bind(Unknown Source)
at java.net.ServerSocket.bind(Unknown Source)
at java.net.ServerSocket.<init>(Unknown Source)
at java.net.ServerSocket.<init>(Unknown Source)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createServerSocket(Unknown Source)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createServerSocket(Unknown Source)
at sun.rmi.transport.tcp.TCPEndpoint.newServerSocket(Unknown Source)
... 9 more

anytime after that. Anyone have a clue what all this means and how to fix it? Other IDEs (JCreator) run fine.
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