package message;
import javax.swing.JOptionPane;
wat doen deze?
ik heb nu een nieuw project gemaakt
dan een Classe aangemaakt, met de naam "Message"
en jouw code erin geplakt.
=> rechtermuis op mijn project
run as application
krijg ik het volgende :
Code:
errors exist in required project:test tn
continue launch?
doe ik de package message; weg,
dan krijg ik gewoon een lange rode lijst in mijn console
Code:
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:
http://java.sun.com/j2se/1.4/docs/tooldocs/solaris/rmid.html
http://java.sun.com/j2se/1.4/docs/tooldocs/win32/rmid.html
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
edit :
dus eigenlijk, als je goed kan werken met BlueJ.
wilt dit niet zeggen dat je degelijk Java kan gebruiken aangezien je al paar dinges niet hoeft te leren. BlueJ doet het voor jou ?
aha, moest op men klasse klikken en dan run, dan gaat het wel ...:doh: