Java Blog

 
 
 
---------------------------------------------------------------------------------
                POLICY File
---------------------------------------------------------------------------------

grant 
{
    permission java.net.SocketPermission \"*:1024-65535\",
        \"connect,accept\";
    permission java.io.FilePermission
        \"C:\\Sarita\\Sem-5\\\\CORBA\\\\RMIAsign\\\\Prac-5\\\\-\", \"read\";

};


---------------------------------------------------------------------------------
                DecodeServer.java
---------------------------------------------------------------------------------

import java.rmi.Naming;
import java.rmi.server.UnicastRemoteObject;
import java.rmi.RMISecurityManager;
import java.rmi.RemoteException;

import java.util.Properties;
import java.util.Date;
import java.util.Calendar;
import java.io.*;
import java.util.*;

import java.rmi.*;

interface DecodeInterface extends Remote 
{
    public String getDecode(String str) throws RemoteException;
}


public class DecodeServer extends UnicastRemoteObject implements DecodeInterface 
{
    public DecodeServer() throws RemoteException 
    {
        super();
    }

    public String getDecode(String s) throws RemoteException 
    {
        char str[] = s.toCharArray();
        char str1[] = new char[20];

        for(int i=0;i<str.length;i++)
        {
            if(str[i] != \' \')
            {
                str1[i] = str[i];
                str1[i] -= 1;
            }
            else
            {
                str1[i] = str[i];
            }
        }

        String dstr = new String(str1);

        Calendar cal = Calendar.getInstance();

        String arr[] = new String[10];
        StringTokenizer st = new StringTokenizer(dstr);
        int i = 0,cnt=0;
        while(st.hasMoreTokens())
        {
            arr[i] = st.nextToken();
            String tim = cal.get(Calendar.HOUR) + \":\" + cal.get(Calendar.MINUTE) + \":\" + cal.get(Calendar.SECOND);
            arr[i] = arr[i] + tim;
            cnt++;
            i++;
        }

        String ans = \"\";
        for(i=0;i<cnt;i++)
        {
            ans = ans + arr[i] + \' \';
        }

        return ans;    
    }

    public static void main(String[] args) 
    {
        try 
        {
            System.setSecurityManager(new RMISecurityManager());

            DecodeServer strObj = new DecodeServer();
            Naming.rebind(\"getDecode\", strObj);
            System.out.println(\"Ready to continue....\");
        }
        catch (Exception e) {
            System.err.println(e);
        }
    }
}


---------------------------------------------------------------------------------
                DecodeClient.java
---------------------------------------------------------------------------------

import java.rmi.Naming;
import java.rmi.RMISecurityManager;
import java.io.*;
import java.util.*;

public class DecodeClient 
{
    public static void main(String[] args) 
    {
        try 
        {
            System.setSecurityManager(new RMISecurityManager());

            DecodeInterface Obj = (DecodeInterface)Naming.lookup(\"getDecode\");

            BufferedReader input=new BufferedReader(new InputStreamReader(System.in));
            System.out.println(\"\\nEnter String : \");
            String s = input.readLine();

            input.close();

            char str[] = s.toCharArray();
            char str1[] = new char[20];
            for(int i=0;i<str.length;i++)
            {
                if(str[i] != \' \')
                {
                    str1[i] = str[i];
                    str1[i] += 1;
                }
                else
                {
                    str1[i] = str[i];
                }

            }

            String estr = new String(str1);
            String result = Obj.getDecode(estr);

            System.out.println(\"\\nThe Encrypt String is : \" + estr);
            System.out.println(\"\\n\\nThe Decrypt String is : \" + result);
        }

        catch(Exception e) 
        {
            System.err.println(e);
        }
    }
}


/*
========================================================================================
                    OUTPUT
========================================================================================


C:\\Sarita\\Home28-10\\RMIAsign\\Prac-5>set classpath=%classpath%;c:\\Sarita\\Home28-10\\RM
IAsign\\Prac-5

C:\\Sarita\\Home28-10\\RMIAsign\\Prac-5>javac *.java

C:\\Sarita\\Home28-10\\RMIAsign\\Prac-5>rmic DecodeServer

C:\\Sarita\\Home28-10\\RMIAsign\\Prac-5>start rmiregistry

C:\\Sarita\\Home28-10\\RMIAsign\\Prac-5>start java -Djava.rmi.server.hostname=localhos
t -Djava.security.policy=java.policy DecodeServer

C:\\Sarita\\Home28-10\\RMIAsign\\Prac-5>java -Djava.security.policy=java.policy Decode
Client localhost

Enter String :
gujarat law society

The Encrypt String is : hvkbsbu mbx tpdjfuz


The Decrypt String is : gujarat10:30:31 law10:30:31 society10:30:31

C:\\Sarita\\Home28-10\\RMIAsign\\Prac-5>

*/