[V-CLASS] PEMROGRAMAN JARINGAN #1

• Modul 1: source code berikut berfungsi untuk mengetahui nama komputer kita.

import java.net.*;
public class GetName
{
public static void main(String args[]) throws Exception
{
InetAddress host = null ;
host = InetAddress.getLocalHost();
System.out.println(“Nama komputer Anda :” + host.getHostName());
}
}

• Modul 2: source code berikut berguna untuk mendapatkan nama komputer berdasarkan ipaddress.

import java.net.*;
public class IPtoName
{
public static void main(String args[])
{
if (args.length == 0)
{
System.out.println(“Pemakaian : java IPtoName <IP Address>”);
System.exit(0);
}
String host = args[0] ;
InetAddress address = null ;
try
{
address = InetAddress.getByName(host);
}
catch(UnknownHostException e)
{
System.out.println(“invalid IP”);
System.exit(0);
}
System.out.println(address.getHostName());
}
}

• Modul 3: source code berikut digunakan untuk mendapatkan ipaddress dari suatu host.

import java.net.*;
import java.io.*;
public class IPFinder
{
public static void main(String args[]) throws IOException
{
String host;
BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
System.out.println(“Enter host name : “);
host = input.readLine();
try
{
InetAddress address = InetAddress.getByName(host);
System.out.println(“IP Address : ” + address);
}
catch(UnknownHostException e)
{
System.out.println(“Could not find ” + host);
}
}
}