I'm currently exploring GUI with java and I've wrote a program in c++
to convert binary to decimal and a caesar cipher codes. Could anyone
help me to convert it to Java with GUI? I'd like to explore more on
GUI codings.

I've setup a GUI based on visual basic 6.0. it's uploaded on

http://img299.imageshack.us/img299/3698/fypgui1mf6.jpg

My c++ codings for both programs are as below.....

//================
//BINARY TO DECIMAL
//================
#include <iostream>
#include <cmath>
using namespace std;
int main()
{
  string bin;
  int base = 10;
  int result = 0;
  int i;
  double power = 0;

  cout<<"Enter a binary number: ";
  getline(cin, bin);

  for (i = bin.length()-1; i >=0; i--)
  {

      result += ((bin[i]-48)*(pow(2,power)));

      power++;
  }
  cout<<"decimal = "<<result<<endl;

  system ("PAUSE");
  return 0;
}

//==============
// CAESAR CIPHER
//==============
#include <iostream>
#include <string>

using namespace std;
int main()
{
       int difference;
       string msg;
       int crypted;
       int real_difference;
       int i=0;

       cout<<"Enter the offset : ";
       cin>>difference;
       cin.get();
       if (difference > 26) //Brings back the number if above 26
       {
               real_difference = difference % 26;
       }

       else
       real_difference = difference;

       cout<<"Enter the message you want to crypt : ";
       getline(cin, msg);
       cout<<"Ciphertext: ";

               while (i<= msg.length())
               {

                       if(msg[i] == 32)
                       {
                               crypted = msg[i];
                               cout<<(char)crypted;
                               i++;
                       }

                       if ((msg[i] + real_difference) > 'z')
                       {

                               crypted = (msg[i] +
real_difference)-'z'+'a';
                       }

                       else
                       {
                               crypted = msg[i] + real_difference;
                       }

                       cout<<(char)crypted;
                       i++;

                       if(i>= msg.length())
                       break;
               }
               cout<<endl;

       system ("PAUSE");
       return 0;
}

Thanks in advance.