Write a class encapsulating the concept of the weather forecast, assuming that it has the following attributes: the temperature and the sky conditions (e.g. sunny, snowy, cloudy, rainy, etc.).  Include a default constructor, an overloaded constructor, accessors and mutators, and the 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. In Addition, include a method that converts Fahrenheit to Celsius. Celsius temperature = (Fahrenheit temperature – 32) * 5/9. Also include a boolean 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.

Write a class encapsulating the concept of converting integer grades to letter grades (A, B, C, D, or F), assuming grades are composed of a list of integers between 0 and 100 (instance variable).

Write the following methods:

• A constructor with just one parameter, the number of students; all grades can be randomly generated.

• Accessor, mutator, toString, and equals methods.

• A method returning an array of chars corresponding to the integer grades (90 or above should be converted to A, 80 or above to B, 70 or above to C, 60 or above to D, and 59 or less to F).

• A method returning the number of A’s.

• A method returning an array of int counting how many A’s, B’s, C’s, D’s, and F’s were received.