Question

I have an issue this project

Background

The intensity of a hurricane is classified according to the Saffir-Simpson hurricane wind scale. The scale together with wind classifications of lower intensities is shown below:

Hurricane Wind Scale Classification	Wind Speed Range (MPH)
Not in scale	0 – 38 mph
Tropical storm	39 – 73 mph
Category One Hurricane	74 – 95 mph
Category Two Hurricane	96 – 110 mph
Category Three Hurricane	111 – 129 mph
Category Four Hurricane	130 – 156 mph
Category Five Hurricane	157 mph or more

Assignment

Write a Java program that asks the user to enter the wind speed. Use a series of nested if statements to determine the intensity of the storm using the above table. Output your result.

Validate your input to check for (invalid) negative wind speeds. For invalid wind speeds – output the classification: Invalid input.

Be sure to include a comment with your name, date, and a short description of the program.

Begin your program as follows:

import java.util.Scanner;

// TODO - add name, date, and purpose of program here
public class Main {

    public static Scanner input = new Scanner(System.in);

    public static void main(String[] args) {
       long speed;
       String classification;
        // TODO - write your program here
    }
}

Example Output

Enter wind speed (mph): 129

Classification: Category Three Hurricane

Additional Information

Do not include unnecessary if statements or unnecessary logical AND/OR clauses in your code.

should be written:

else if (speed <= 73) { // checking for category 2

My code

mport java.util.Scanner;
public class Main
{
public static Scanner input = new Scanner(System.in);
  
public static void main(String[] args) {
long speed;
String classification="";
System.out.println("Enter wind speed (mph): ");
speed= Main.input.nextLong();
if (speed >= 0 && speed <= 38) {// cheking for category 1
classification="Not in scale";
}
else if (speed >= 39 && speed <= 73) {// cheking for category 2
classification="Topical storm";
}
else if (speed >= 74 && speed <= 95) {// cheking for category 3
classification="Category One Hurricane";
}
else if (speed >= 96 && speed <= 110) {// cheking for category 4
classification="Category Two Hurricane";
}
else if (speed >= 111 && speed <= 129) {// cheking for category 5
classification="Category Three Hurricane";
}
else if (speed >= 130 && speed <= 156) {// cheking for category 6
classification="Category Four Hurricane";
}
else if (speed >= 157) {// cheking for category 7
classification="Category Five Hurricane";
}
if(speed>=0)
{
System.out.print("Category is "+classification);
}
else
{
System.out.println("Invalid input.");
}
}
}

Answer 1

ANSWER:-

// NOTE : I removed all unnecessary if ,else statement. program working fine.if any doubt please comment

import java.util.Scanner;
public class Main
{
public static Scanner input = new Scanner(System.in);
  
public static void main(String[] args) {
long speed;
String classification="";
System.out.println("Enter wind speed (mph): 129");
speed= Main.input.nextLong();
if(speed>=0)
{
   if(speed<=38) // checking for category 1
   {
       classification="Not in scale";
   }
   else if(speed<=73) // checking for category 2
   {
       classification="Topical storm";
   }
   else if(speed<=95) // checking for category 3
   {
       classification="Category One Hurricane";
   }
   else if(speed<=110) // checking for category 4
   {
       classification="Category Two Hurricane";
   }
   else if(speed<=129) // checking for category 5
   {
       classification="Category Three Hurricane";
   }
   else if(speed<=156) // checking for category 6
   {
       classification="Category Four Hurricane";
   }
   else if (speed >= 157) { // checking for category 7
classification="Category Five Hurricane";
   }
   System.out.print("Classification: "+classification);
}
else
System.out.print("Classification: Invalid input.");
}
}

// OUTPUT