Java Examples in a Nutshell, 3rd Edition

The MudPerson Class

Example 21-7 shows the MudPerson class. This is the simplest of the remote objects in the MUD system. It implements the two remote methods defined by the RemoteMudPerson interface and also defines a few nonremote methods used by the MudClient class of Example 21-8. The remote methods are quite simple: one simply returns a description string to the caller, and the other writes a message to a stream where the user can see it.

Example 21-7. MudPerson.java

package je3.rmi; import java.rmi.*; import java.rmi.server.*; import java.io.*; import je3.rmi.Mud.*; /** * This is the simplest of the remote objects that we implement for the MUD. * It maintains only a little bit of state, and has only two exported * methods **/ public class MudPerson extends UnicastRemoteObject implements RemoteMudPerson { String name; // The name of the person String description; // The person's description PrintWriter tellStream; // Where to send messages we receive public MudPerson(String n, String d, PrintWriter out) throws RemoteException { name = n; description = d; tellStream = out; } /** Return the person's name. Not a remote method */ public String getName( ) { return name; } /** Set the person's name. Not a remote method */ public void setName(String n) { name = n; } /** Set the person's description. Not a remote method */ public void setDescription(String d) { description = d; } /** Set the stream that messages to us should be written to. Not remote. */ public void setTellStream(PrintWriter ...