Each of the two exercises can either be a regular type of exercise $($represented by anExercise class$),$ or a strength training activity $($represented by a StrengthTraining class$).$You are to write both the Exercise and StrengthTraining classes.The Exercise class tracks the following information: The exercise name $($for example, "Bike ride" or "Run"$)$ The duration in minutes The intensity level $($a String with a value of either "low", "medium" or "high"$)$A StrengthTraining is a special Type of Exercise, so the StrengthTraining class inheritsthe properties of the Exercise class, including name, duration, and intensity. $($For fullmarks, your solution must use inheritance.$)$ In addition, a StrengthTraining object tracks: The number of sets The number of reps per set $($reps stands for repetitions; the number of timesthe weight is lifted during each set$)$ The maximum weight lifted in poundsFor example, a strength training session might involve lifting a $40-$pound weight tentimes per set, all of that repeated eight times. In that case, the number of sets is $8,$ thenumber of reps per set is $10,$ and the max weight lifted is $40.($The total number of repsin that workout would be $80,$ but that number could be calculated so it is not stored.$)$Include in each of those three classes $($Workout$,$ Exercise, and StrengthTraining$)$ astandard constructor, as well as standard accessor and mutator methods for each of theinstance variables.The constructor for the Workout class has five parameters, including one for the warm$-$up exercise and one for the main exercise.Include a toString$()$ method in each of the Exercise and StrengthTraining classes. Theversion for the Exercise class should produce a result that resembles the following:Exercise: Bike RideDuration: $60$ minutesIntensity: mediumThe duration variable stores a numeric value, so the word "minutes" is added by thetoString$()$ method.The version for the StrengthTraining class calls the Exercise toString$()$ method to helpproduce a result that resembles the following:Exercise: Circuit TrainingDuration: $45$ minutesIntensity: highNumber of Sets: $18$Reps per Set: $10$Max Weight Lifted: $135$ poundsAlso include a method in each of the Exercise and StrengthTraining classes thatestimates and returns the number of calories burned by completing that exercise $($avalue of type double$).$ Those two methods have the same name but are in differentclasses.