Write a Java program:

a$.$ Write a main program that declare a variable max. Then, the main program should call the method

findMax$()$ and print the largest number.

b$.$ Defined a method named findMax$()$ with a Scanner parameter, findMax$($scnr$).$ The method reads

integers from input until a negative integer is read. The method returns the largest of the integers read.

c$.$ Ex: If the input is: $258020-25-55$

The output is: The largest number is $80.$