Question

Java

Write a Temperature class that has two private instance variables:
• degrees: a double that holds the temperature value
• scale: a character either ‘C’ for Celsius or ‘F’ for Fahrenheit (either in uppercase or lowercase)
The class should have
- four constructor methods: one for each instance variable (assume zero degrees if no value is specified
and assume Celsius if no scale is specified), one with two parameters for the two instance variables, and a
no-argument constructor (set to zero degrees Celsius);
- two getter methods to return the temperature, one to return the degrees Celsius, the other to return the
degrees Fahrenheit – use the following formulas to write the two methods, and round to the nearest tenth
of a degree:
degreesC = (degreesF – 32) *5 /9 degreesF = (degreesC *9 /5) + 32
- three setter methods, one to set the value, one to set the scale (‘F’, ‘f’, ‘C’, or ‘c’, if any other invalid
character is given, terminate your program), and one to set both;
- three comparison methods, an equals method to test whether two temperatures are equal, one method
to test whether one temperature is greater than another, and one method to test whether one temperature is
less than another (note that a Celsius temperature can be equal to a Fahrenheit temperature as indicated by
the above formulas).
Write a driver program in TemperatureTest that tests each of the constructors, getters, setters, and
include at least one true and one false case for each of the comparison methods.

Answer 1

class Temparature {
   private double temp;
   private char scale;

   public Temparature(double aTemp, char aC) {
       super();
       temp = aTemp;
       scale = aC;
   }

   public Temparature() {
       super();
       temp = 0;
       scale = 'C';
   }

   public Temparature(double aTemp) {
       super();
       temp = aTemp;
       scale = 'C';
   }

   public Temparature(char s) {
       super();
       temp = 0;
       scale = s;
   }

   public double getTemp() {
       return temp;
   }

   public void setTemp(double aTemp) {
       temp = aTemp;
   }

   public char getScale() {
       return scale;
   }

   public void setScale(char aScale) {
       scale = aScale;
   }

   public double getDegreesC() {
       if(scale=='C')
           return temp;
       return 5 * (temp - 32) / 9.0;
   }

   public double getDegreesF() {
       if(scale=='F')
           return temp;
       return 9.0 * (temp / 5.0) + 32;
   }

   public boolean equals(Temparature t) {
       return t.getTemp() == this.getTemp();
   }

   public boolean greater(Temparature t) {
       return (this.temp > t.temp);
   }

   public boolean lessThan(Temparature t) {
       return (this.temp < t.temp);
   }

   public String toString() {
       temp += 0.05;
       String t = temp + "";
       t = t.substring(0, t.indexOf(".") + 2);
       return t + " " + scale;
   }
}

public class TemparatureTest {
   public static void main(String[] args) {
       Temparature t = new Temparature(104, 'F');
       System.out.println(t.getDegreesC());
       System.out.println(t.getDegreesF());

   }
}

Note : Please comment below if you have concerns. I am here to help you

If you like my answer please rate and help me it is very Imp for me