Java help

import javax.swing.JOptionPane;
import java.util.Scanner;
public class Temperature
"{
public static void main (String[]args)
{
double celcius = 0;
String farenString = null;
String c = null;
c = farenString;
f = celciusString;
farenString = getInput();
celciusString = getInputs();

while(!farenString.equalsIgnoreCase("q"))
{
System.out.println("Converting temperature using 'f' fahrenheit or 'c' celsius? \n or 'q' to quit:");

}
{
celcius = convert(farenString);
System.out.println("\n\n\n The temperatur celcius: \n\n" + celcius);
farenString = getInput();
}
}
public static String getInput()
{
String farenString = null;
Scanner keyboard = new Scanner(System.in);
System.out.print("\n Enter a Farenhite temp:");
farenString = keyboard.nextLine();
return(farenString);


}
public static double convert(String farenString)
{
double farenhite = 0.0;
farenhite = Double.parseDouble(farenString);
double celcius = (farenhite - 32) *5/9;
return(celcius);
}
}"

Write a program that allows the user to convert a temperature given in degrees from either celsius to fahrenheit or fahrenheit to celsius.

prompt the user to enter a temperature and either a c or C for celsius or F or f for Fahrenheit. Convert the temperature, display the result in a readable format and a message informing the user whether the temperature is hot or cold. If anything other then C,c,f,F is enter, print an error message and allow the user to reenter data
perform temperature conversion until the user enter Q or q to stop.

import javax.swing.JOptionPane;
import java.util.Scanner;
public class Temperature
{
public static void main (String[]args)
{
while(3)
{
Scanner keyboard = new Scanner(System.in);
System.out.println("Would you like to convert from Fahrenheit to Celcius or Celcius to Fahrenheit?");
System.out.println("(1) Fahrenheit to Celcius");
System.out.println("(2) Celcius to Fahrenheit");
System.out.println("(3) to exit the program.");
int choice = in.nextInt();
if (choice != 1 && choice != 2 && choice !=3)

System.out.println("That was not one of the choices.");

else if (choice == 1)
{
System.out.println("Enter the temperature in Fahrenheit:");
double fahrenString = 0.0;
fahrenString = Double.parseDouble(fahrenString);
fahrenString = (((fahrenString-32)*5)/9);
System.out.println("Your converted value is: " + fahrenString + " degrees Celcius.");
if (fahrenString <=35)
responseA = "HOT";
else if (fahrenString <=22)
responseA = "Warm";
else if (fahrenString <=0)
responseA = "COLD";
}
else if (choice == 2)
{
System.out.println("Enter the temperature in Celcius:");
double celciusString = 0.0;
celciusString = Double.parseDouble(celciusString);
celciusString = (((celciusString*9)/5)+32);
System.out.println("Your converted value is: " + celciusString + " degrees Fahrenheit.");
if (celciusString <=95)
responseA = "HOT";
else if (celciusString <=71)
responseA = "Warm";
else if (celciusString <=32)
responseA = "COLD";
}
}
}


}

import javax.swing.JOptionPane;
import java.util.Scanner;
public class TemperatureCommentVersion

{
public static void main (String[]args)
{
Scanner keyboard = new Scanner(System.in);
String choice = "";
while(!choice.equalsIgnoreCase("q"))mean does not equal that
{
System.out.println("Would you like to convert from Fahrenheit to Celcius or Celcius to Fahrenheit?");
System.out.println("\n\n(f) Fahrenheit to Celcius");
System.out.println("(c) Celcius to Fahrenheit");
System.out.println("(q) to exit the program.\n");
choice = keyboard.next();
if (!choice.equalsIgnoreCase("f") && !choice.equalsIgnoreCase("c") && !choice.equalsIgnoreCase("q"))
{
System.out.println("That was not one of the choices.");
}

else if (choice.equalsIgnoreCase("f"))
{
System.out.print("Enter the temperature in Fahrenheit:");
double fahrenString = 0.0;
double celciusString = 0.0;
fahrenString = keyboard.nextDouble();//get input
celciusString = (((fahrenString-32)*5)/9);
System.out.println("Your converted value is: " + celciusString + " degrees Celcius.");

if (celciusString <=0)
System.out.println("Very COLD temperature.");
else if (celciusString <=22)
System.out.println("This temperature seem warm.");
else if (celciusString >22)
System.out.println("That is very HOT.");


}
else if (choice.equalsIgnoreCase("c"))
{
System.out.print("Enter the temperature in Celcius:");
double celciusString = 0.0;
double fahrenString = 0.0;
celciusString = keyboard.nextDouble();
fahrenString = (((celciusString*9)/5)+32);
System.out.println("Your converted value is: " + fahrenString + " degrees Fahrenheit.\n\n");

if (fahrenString <=32)
System.out.println("Very COLD temperature.");
else if (fahrenString <=71)
System.out.println("This temperature seem warm.");
else if (fahrenString >71)
System.out.println("That is very HOT.");
}

}
}
}

If you want an example:

My HTML classes were very interesting and I was able to polish off the majority of the basics of each assignment and had plenty of time to work on making things look nice. In contrast, my C/C++ classes got kind of boring and I began to get lost; as such my work suffered and eventually didn't get done at all.

Unless you are one of those people who find perverse pleasure in obfuscating code, find a way to organize your program. Here's a simple C# program to show decent organization (because it could probably be better, wasn't kidding when I said I was rusty. It's likely needlessly complex)

using System; /* all include, using or whatever your language uses to interact with the machine and user bits go here, everything you think you might need. you can always remove what you don't need later*/

public static void main ()
{
string lenghtS, widthS, areaS; /* differentiate strings from same named int var */
int length, width, area;
/* find a way to organize and name your variable declarations that makes sense and keep it easy to read. This makes it easier for your teacher and others to troubleshoot */

// I like to keep each operation is kept separate. First the data is input and
// converted to an integer. Then the math is done and solution printed

Console.WriteLine("Please enter length of rectangle");
lengthS = Console.ReadLine();
length = Convert.ToInt32(lengthS);

Console.WriteLine("Please enter width of rectangle");
widthS = Console.ReadLine();
width= Convert.ToInt32(widthS);

area = length * width;
Console.WriteLine("Area of rectangle is {0}", area);
}//eof