Answer:
import java.util.Scanner;
class Main{
public static void main(String[] args){
double temp;
Scanner scan = new Scanner (System.in);
System.out.println("Enter the temperature, please: ");
temp= scan.nextDouble();
if (temp>=98.6){
System.out.println("Fever.");
}else{
System.out.println("No Fever.");
}
}