View difference between Paste ID: BqKTcvd9 and E0mmZpSk

 import java.util.Scanner;
 
 public class Converter {
 
 	public static void main(String[] args) {
 		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;
 		char f = 'f';
 		char c = 'c';
 		char C = 'C';
 		double answer, temp;
 
 		temperature = keyboard.nextLine();
 
 		if (temperature.contains("C")) {
 			temperature = temperature.replace(C, ' ');
 			temp = Double.valueOf(temperature);
-			answer = (double) temp * 9 / 5 + 32;
+			answer = (double) (temp * (9 / 5) + 32);
 			System.out.println("Poof! The temperature is " + answer + "F");
-		} else {
+		} else
 
 			if (temperature.contains("c")) {
 				temperature = temperature.replace(c, ' ');
 				temp = Double.valueOf(temperature);
-				answer = (double) temp * 9 / 5 + 32;
+				answer = (double) (temp * (9 / 5) + 32);
 				System.out.println("Poof! The temperature is " + answer + "F");
-			} else {
+			} else
 
 				if (temperature.contains("F")) {
 					temperature = temperature.replace(f, ' ');
 					temp = Double.valueOf(temperature);
-					answer = (double) (temp - 30) * 5 / 9;
+					answer = (double) ((temp - 30) * (5 / 9));
 					System.out.println("Poof! The temperature is " + answer
 							+ "C");
-				} else {
+				} else
 
 					if (temperature.contains("f")) {
 						temperature = temperature.replace(f, ' ');
 						temp = Double.valueOf(temperature);
-						answer = (double) temp - 30 / 2;
+						answer = (double) ((temp - 30) * (5/9));
 						System.out.println("Poof! The temperature is " + answer
 								+ "C");
 					} else {
 						System.out
 								.println("You entered the temperature wrong!");
 					}
 				}
 			}
 		}
 		keyboard.close();
 	}
 }