Celsius conversion program

I am very new to Java and am having a really hard time writing programs. I am trying to write a program that converts celsius to fahrenheit. The program should ask a user to input a temperature and either f for fahrenheit or c for celsius. It should not be case sensitive. I am ALL messed up. Here is what I have, but i cannot for the life of me figure out how the numeric portion and the character portion of the users input will be calculated seperately. Any hints would be greatly appreciated.

public class Degrees
{
    public static void main(String[] args)

    {

              /**List of tasks
              Ask for input
              Make sure type of degree is non-case sensitive
              Perform converstion and output
              Ask user to end program or perform another conversion
              */


            //double number;

            System.out.println("This program will convert degrees Celcius to Fahrenheit or vice versa"); //outputs sentence

          do
          {
                System.out.println("\nPlease enter a temperature and either a C for Celcius or F for Fahrenheit");
                char input = SavitchIn.readLineNonwhiteChar();
                System.out.println();
                //switch(input);
                //int degree = input.indexOf('f') && ('c');
                //number = (input.substring(0, degree));
                //degree = line.substring(char);

            double degreesC;
            double degreesF;

            degreesC = ((degreesF - 32) * 5)/9; //Fahrenheit to Celsius formula
                degreesF = ((9 * degreesC)/5) + 32; //Celsius to Fahrenheit formula


                System.out.println("Enter Q to quit or press any other key to perform another conversion");
                char quitAnswer = SavitchInReadLineChar(); //reads user input
                if(quitAnswer == 'q') //if user input is lowercase q
                         System.exit(0); //then exit the system
                else if(quitAnswer == 'Q') //if user input is uppercase Q
                         System.exit(0); //then exit the system

            }while (quitAnswer != 'q' && quitAnswer != 'Q'); //if it is neither, then start over
      }

}