CheckTemperature.java

//CheckTemperature.java

import java.util.Scanner;

/**
    This program assists a technician in the process
    of checking a substance's temperature.
*/

public class CheckTemperature
{
  public static void main(String[] args)
  {
      final double MAX_TEMP = 102.5;      // Maximum temperature
      double temperature;                 // To hold the temperature

      // Create a Scanner object for keyboard input.
      Scanner keyboard = new Scanner(System.in);

      // Get he current temperature.
      System.out.print("Enter the substance's Celcius temperature: ");
      temperature = keyboard.nextDouble();

      // As long as necessary, instruct the technician
      // to adjust the temperature.
      while (temperature > MAX_TEMP)
      {
        System.out.println("The temperature is too high. Turn the");
        System.out.println("thermostat down and wait 5 minutes.");
        System.out.println("Then, take the Celcius temperature again");
        System.out.println("and enter it here: ");
        temperature = keyboard.nextDouble();
      }

      // Remind the technician to check the temperature
      // agin in 15 minutes
      System.out.println("The temperature is acceptable.");
      System.out.println("Check it again in 15 minutes.");
  }
}