View difference between Paste ID: X3048uA2 and xJR5mv2t

 import java.util.Scanner;
 
 public class Converter {
 
-	@SuppressWarnings("null")
+
 		Scanner keyboard = new Scanner(System.in);
 
 		System.out.println("Welcome to the Fahrenheit/Celsius Converter!");
 		System.out.println("To convert, type in your temperature and the identify if you are using fahrenheit or celsius.");
 		System.out.println("Example: 69F or 69C F = Fahrenheit C = Celsius");
 
 		String temperature;
-		String temperature = null;
+
 		double answer , temp;
 
 		temp = keyboard.nextDouble();
 
 		if (temperature.contains("F")) {
 			String StringVariable = null;
 			StringVariable.replace(f , ' ');
 			answer = temp - 30 / 2;
 			System.out.println("Poof! The temperature is " + answer + "C");
 		} else {
 			System.out.println("You entered the temperature wrong!");
 
 
 			}
 	}
 
 }