Thread: Distance Traveled problem help

My code compiles, but when running it, it continues to infinity. How do I change that?

Here is the problem:

The distance a vehicle travels can be calculated as follows:
Distance = Speed * Time
For example, if a train travels 40 miles-per-hour for three hours, the distance traveled is 120 miles. Write a program that asks for the speed of a vehicle (in mph) and the number of hours it has traveled. It should use a loop to display the distance a vehicle has traveled for each hour of a time period specified by the user. For example, if a vehicle is traveling at 40 mph for a three-hour time period, it should display a report similar to the one that follows:

Hour Distance Traveled
--------------------------------------------
1 40
2 80
3 120

Input Validation: Do not accept a negative number for speed and do not accept any value less than 1 for time traveled.

Here is my code:

 import java.util.Scanner;
 
public class DistanceTraveled
{
   public static void main(String[] args)
   {
      Scanner keyboard = new Scanner(System.in);
      int vehicleSpeed = 0, hoursTraveled = 0, hours = 1;
 
      System.out.print("Enter the vehicle speed: ");
      vehicleSpeed = keyboard.nextInt();
 
      while (vehicleSpeed < 0)
      {
         System.out.print("Enter the vehicle speed: ");
         vehicleSpeed = keyboard.nextInt();
      }
 
      System.out.print("Enter the amount of hours traveled: ");
      hoursTraveled = keyboard.nextInt();
 
      while (hoursTraveled < 1)
      {
         System.out.print("Enter the amount of hours taveled (MPH): ");
         hoursTraveled = keyboard.nextInt();
      }
 
      System.out.println("Hours" + "           Distance Traveled");
      System.out.println("--------------------------------------");
 
      while (hours >= 1)
      {
         System.out.println("  " + hours + "              " + hours * vehicleSpeed + "MPH");
         hours++;
         hoursTraveled--;
      }
   }
}

while(hours >= 1)
...
hours++

Look at that bit of code and think about it some more.