1  ///////////////////////////// PassObjectRef.java \\\\\\\\\\\\\\\\\\\\\\\\\\\
   
 2  import java.rmi.*;
   
 3  interface PassObjectRef extends Remote {
 4     void   add( int in ) throws RemoteException;
 5     String get()         throws RemoteException;
 6  }
   
 7  /////////////////////////// PassObjectRefImpl.java \\\\\\\\\\\\\\\\\\\\\\\\\
   
 8  import java.rmi.*;
 9  import java.rmi.server.*;
   
10  public class PassObjectRefImpl extends    UnicastRemoteObject
11                                 implements PassObjectRef {
12     private int[] array = new int[9];
13     private int   total = 0;
   
14     public PassObjectRefImpl() throws RemoteException {
15        System.out.println( "PassObjectRefImpl ctor" );
16     }
17     public void add( int in ) {
18        array[total++] = in;
19     }
20     public String get() {
21        StringBuffer sb = new StringBuffer();
22        sb.append( "[ " );
23        for (int i=0; i < total; i++) {
24           sb.append( array[i] );
25           sb.append( ' ' );
26        }
27        sb.append( "]" );
28        return sb.toString();
29  }  }
   
30  ///////////////////////////// PassObjectVal.java \\\\\\\\\\\\\\\\\\\\\\\\\\\
   
31  import java.io.*;
   
32  public class PassObjectVal implements Serializable {
33     private int[] array = new int[9];
34     private int   total = 0;
   
35     public PassObjectVal() {
36        System.out.println( "PassObjectVal ctor" );
37     }
38     public void add( int in ) {
39        array[total++] = in;
40     }
41     public String get() {
42        StringBuffer sb = new StringBuffer();
43        sb.append( "[ " );
44        for (int i=0; i < total; i++) {
45           sb.append( array[i] );
46           sb.append( ' ' );
47        }
48        sb.append( "]" );
49        return sb.toString();
50  }  }
   
51  /////////////////////////// PassObjectMaster.java \\\\\\\\\\\\\\\\\\\\\\\\\\
   
52  import java.rmi.*;
   
53  interface PassObjectMaster extends Remote {
54     PassObjectRef getObjRef() throws RemoteException;
55     PassObjectVal getObjVal() throws RemoteException;
56  }
   
57  ///////////////////////// PassObjectMasterImpl.java \\\\\\\\\\\\\\\\\\\\\\\\
   
58  import java.rmi.*;
59  import java.rmi.server.*;
   
60  public class PassObjectMasterImpl extends    UnicastRemoteObject
61                                    implements PassObjectMaster {
62     private PassObjectRef refObj;
63     private PassObjectVal valObj;
   
               64     public PassObjectMasterImpl() throws RemoteException {
65        refObj = new PassObjectRefImpl();
66        valObj = new PassObjectVal();
67        for (int i=1; i < 3; i++) {
68           refObj.add( i );
69           valObj.add( i );
70        }
71        System.out.println( "PassObjectMasterImpl ctor" );
72     }
73     public PassObjectRef getObjRef() {
74        return refObj;
75     }
76     public PassObjectVal getObjVal() {
77        return valObj;
78  }  }
   
79  /////////////////////////// PassObjectServer.java \\\\\\\\\\\\\\\\\\\\\\\\\\
   
80  import java.rmi.*;
81  import java.rmi.server.*;
   
82  public class PassObjectServer {
83     public static void main( String[] args ) {
84        System.setSecurityManager( new RMISecurityManager() );
85        try {
86           PassObjectMaster master = new PassObjectMasterImpl();
87           Naming.rebind( "masterObj", master );
88           System.out.println( "masterObj bound" );
89        } catch (Exception ex ) {
90           System.out.println( ex );
91  }  }  }
   
92  // PassObjectRefImpl ctor
93  // PassObjectVal ctor
94  // PassObjectMasterImpl ctor
95  // masterObj bound
   
96  /////////////////////////// PassObjectClient.java \\\\\\\\\\\\\\\\\\\\\\\\\\
   
97  import java.rmi.*;
98  import java.rmi.server.*;
   
99  public class PassObjectClient {
00     public static void main( String[] args ) {
01        System.setSecurityManager( new RMISecurityManager() );
02        String url = "rmi:///";
03        try {
04           PassObjectMaster master =
05              (PassObjectMaster) Naming.lookup( url + "masterObj" );
06           PassObjectRef ref1 = master.getObjRef();
07           PassObjectVal val1 = master.getObjVal();
08           System.out.println( "ref1 is " + ref1.get() );
09           System.out.println( "val1 is " + val1.get() + '\n' );
   
10           for (int i=3; i < 5; i++) {
11              ref1.add( i );
12              val1.add( i );
13           }
14           System.out.println( "ref1 is " + ref1.get() );
15           System.out.println( "val1 is " + val1.get() + '\n' );
   
16           ref1 = master.getObjRef();
17           val1 = master.getObjVal();
18           System.out.println( "ref2 is " + ref1.get() );
19           System.out.println( "val2 is " + val1.get() );
   
20        } catch (Exception ex ) {
21           System.out.println( ex );
22        }
23        System.exit( 0 );
24  }  }
   
25  // ref1 is [ 1 2 ]
26  // val1 is [ 1 2 ]
27  // 
28  // ref1 is [ 1 2 3 4 ]
29  // val1 is [ 1 2 3 4 ]
30  // 
31  // ref2 is [ 1 2 3 4 ]
32  // val2 is [ 1 2 ]