| fresher |
Jan 10th, 2007 6:43 PM |
Passing a string to a variable
Hi all, I've got this piece of code below which gives the output as shown:
:
// TCP client which receives a message from server
import java.io.*;
import java.util.*;
import java.net.*;
class IPgenerator2
{
//public static void main( String[] args )
// {
//int n = 0;
String ip = "192.168.0.";
void ipmethd()
{
KeyboardInput in = new KeyboardInput();
for(int i = 1; i < 10; i++) {
System.out.print(i);
System.out.print(". ");
//System.out.print();
System.out.println(ip + i);
}
System.out.println();
System.out.print("SELECT A MACHINE TO VIEW FROM LIST: ");
int choice = in.readInteger();
//to view input
//System.out.println(choice);
switch (choice)
{
case 1:
System.out.println("You selected to view machine with IP: 192.168.0.1");
//pass this ip to the client program to establish connection
break;
case 2:
System.out.println("You selected to view machine with IP: 192.168.0.2");
break;
default:
System.out.println("machine doesnt exist");
}
}
}
//client program starts here
public class TCPclientText
{
public static void main(String args[])
{
IPgenerator2 ip = new IPgenerator2();
//call ipgenerator
ip.ipmethd();
//server IP address
//String remoteIPaddress="192.168.2.4";
// int remotePort=9000;
//array to hold list of client IPs say registered
//array enables me select the client to connect to
String remoteIPaddress[]={"192.168.2.4","192.168.2.5","192.168.2.6"};
int remotePort=9000;
//for(int index=0; index<3;index++)
try
{
// connect to server with remoteIPaddress on remotePort
//Socket socket1 = new Socket( remoteIPaddress, remotePort );
//here I have selected to connect to just the first client - index 0
Socket socket1 = new Socket( remoteIPaddress[0], remotePort );
//timeout after 3sec of inactivity
//socket1.setSoTimeout(3000);
// open reader to receive messages from server
BufferedReader inFromServer = new BufferedReader(new InputStreamReader( socket1.getInputStream()));
System.out.println("Server contacted OK ");
// loop reading messages from server
while(true)
{
String line = inFromServer.readLine();
System.out.println("From server " + line);
}
}
catch(UnknownHostException e){
System.err.println("Don't know about host ....");
}
//predefined message is returned if client is not responding
catch(ConnectException e){
System.err.println("Unreachable node!, failure in connecting to server");
}
catch (IOException e) {System.err.println("TCP client error " + e); }
//if server suddenly shutsdown for instance
}
}
OUTPUT:
1. 192.168.0.1
2. 192.168.0.2
3. 192.168.0.3
.
.
.
9. 192.168.0.9
SELECT FROM LIST OF IPS.........:
[b]QUESTION[\B]
Im trying to pass the choice of the user to the variable 'remoteIPaddress' so that a connection is established with the
IP address (host) selected from the list by the user. In order words if the user selects/ enters 2 then: 192.168.0.2 is passed / assigned to remoteIPadress. Im gonna delete the array remoteIPaddress[] if i can get this to work.
any responses will be appreciated. Thanks |
