Write a class encapsulating the concept of the weather forecast, assuming that i

Question

Write a class encapsulating the concept of the weather forecast, assuming that it has the following attributes: the temperature and the sky conditions, which could be sunny, snowy, cloudy, or rainy. Include a constructor, the accessors and mutators, and methods toString and equals. Temperature, in Fahrenheit, should be between 50 and +150; the default value is 70, if needed. The default sky condition is sunny. Include a method that converts Fahrenheit to Celsius. Celsius temperature = (Fahrenheit temperature – 32) * 5 / 9. Also include a method that checks whether the weather attributes are consistent (there are two cases where they are not consistent: when the temperature is below 32 and it is not snowy, and when the temperature is above 100 and it is not sunny). Write a client class to test all the methods in your class.

Sample output is this:

You must create a Java project and TWO separate classes!

Explanation / Answer

// WeatherForecast.java
import java.util.*;
//Write a class encapsulating the concept of the weather forecast, assuming that it has the following attributes:
//the temperature and the sky conditions, which could be sunny, snowy, cloudy, or rainy.

class WeatherForecast
{
   private double fahrenheit;
   private String skyCondition;
   //Include a default constructor,
   public WeatherForecast()
   {
       //Temperature, in fahrenheit, should be between -50 and +150; the default value is 70, if needed.
       fahrenheit = 70;
       //The default sky condition is sunny.
       skyCondition = "sunny";
   }
   //an overloaded constructor,
   public WeatherForecast(double f,String s)
   {
       fahrenheit = f;
       skyCondition = s;
   }
   //the accessors and
   public String getSkyCondition()
   {
       return skyCondition;
   }
   public double getfahrenheit()
   {
       return fahrenheit;
   }
   //mutators, and methods,
   public void setfahrenheit(double f)
   {
       fahrenheit = f;
   }
   public void setSkyCondition(String s)
   {
       skyCondition = s;
   }
   //toString() and
   public String toString()
   {
       return "Sky Condition is " + skyCondition + " and temperature is " + fahrenheit;
   }
   //equals().
   public boolean equals(WeatherForecast T)
   {
       return ((fahrenheit == T.fahrenheit) && (skyCondition.equalsIgnoreCase(T.skyCondition)));
   }
   //Include a method that converts fahrenheit to Celsius. Celsius temperature = (fahrenheit temperature 32) * 5/9
   public double toCelsius()
   {
       return (fahrenheit-32)*5/9;
   }
   //. Also include a method that checks whether the weather attributes are consistent
   // (there are two cases where they are not consistent: when the temperature is below 32 and it is not snowy, and when the
   // temperature is above 100 and it is not sunny).
   public boolean isConsistent()
   {
       if(fahrenheit <32 && !skyCondition.equalsIgnoreCase("snowy")) return false;
       if(fahrenheit >100 && !skyCondition.equalsIgnoreCase("sunny")) return false;
       return true;
   }
}

// ForecastTester.java
public class ForecastTester
{
public static void main(String[] args)
{

   System.out.println("Temperature cannot be less than -50 or greater than 150");
WeatherForecast t1 = new WeatherForecast();
t1.setSkyCondition("cloudy");
System.out.println("Temperature set to " + t1.getfahrenheit());
WeatherForecast t2 = new WeatherForecast(23.0,"sunny");
System.out.println("The Temperature of Weather Forecast #1 is " + t2.getfahrenheit() + "F or " + t2.toCelsius() );
System.out.println("The Sky condition of Weather Forecast #1 is " + t2.getSkyCondition() );

System.out.println("Weather Forecast #2 is Temperature " + t1.getfahrenheit() + "; sky: " + t1.getSkyCondition() );

System.out.println("Weather Forecast Temperature: " + t2.getfahrenheit());
if(t2.isConsistent()== true)
   System.out.println(t2.getSkyCondition() + " is Consistent");
else
   System.out.println(t2.getSkyCondition() + " is not Consistent");

System.out.println("Weather Forecast Temperature: " + t1.getfahrenheit());
if(t1.isConsistent()== true)
   System.out.println(t1.getSkyCondition() + " is Consistent");
else
   System.out.println(t1.getSkyCondition() + " is not Consistent");

if(t1.equals(t2) == true)
   System.out.println("Original Weather Forecast #1 and #2 are same");
else
   System.out.println("Original Weather Forecast #1 and #2 are different");
}
}

/*
output:

Temperature cannot be less than -50 or greater than 150
Temperature set to 70.0
The Temperature of Weather Forecast #1 is 23.0F or -5.0
The Sky condition of Weather Forecast #1 is sunny
Weather Forecast #2 is Temperature 70.0; sky: cloudy
Weather Forecast Temperature: 23.0
sunny is not Consistent
Weather Forecast Temperature: 70.0
cloudy is Consistent
Original Weather Forecast #1 and #2 are different

*/

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