Temperature conversions: Implement the following methods: a) Method celsius() that returns the Celsius equivalent of a Fahrenheit temperature, using the calculation: celsius = 5.0/9.0 * (fahrenheit - 32.0). b) Method fahrenheit() that returns the Fahrenheit equivalent of a Celsius temperature, using the calculation: fahrenheit = 9.0/5.0 * celsius + 32. c) Use the methods in a program that allows the user to enter either a Celsius or a Fahrenheit temperature and the appropriate method is called to convert the temperature to the other scale. java please