Conflito no Eclipse com porta do S.O

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(TCPTransport.java:249)

at sun.rmi.transport.tcp.TCPTransport.exportObject(TCPTransport.java:184)

at sun.rmi.transport.tcp.TCPEndpoint.exportObject(TCPEndpoint.java:382)

at sun.rmi.transport.LiveRef.exportObject(LiveRef.java:116)

at sun.rmi.server.UnicastServerRef.exportObject(UnicastServerRef.java:180)

at sun.rmi.registry.RegistryImpl.setup(RegistryImpl.java:92)

at sun.rmi.registry.RegistryImpl.<init>(RegistryImpl.java:68)

at java.rmi.registry.LocateRegistry.createRegistry(LocateRegistry.java:222)

at sun.rmi.server.Activation.main(Activation.java:1892)

Caused by: java.net.BindException: Address already in use: JVM_Bind

at java.net.PlainSocketImpl.socketBind(Native Method)

at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:359)

at java.net.ServerSocket.bind(ServerSocket.java:319)

at java.net.ServerSocket.<init>(ServerSocket.java:185)

at java.net.ServerSocket.<init>(ServerSocket.java:97)

at sun.rmi.transport.proxy.RMIDirectSocketFactory.createServerSocket(RMIDirectSocketFactory.java:27)

at sun.rmi.transport.proxy.RMIMasterSocketFactory.createServerSocket(RMIMasterSocketFactory.java:333)

at sun.rmi.transport.tcp.TCPEndpoint.newServerSocket(TCPEndpoint.java:622)

at sun.rmi.transport.tcp.TCPTransport.listen(TCPTransport.java:237)

… 8 more