a)Modify the two-parameter setHeight method in Figure 7.10 to make it test its units param...

a)Modify the two-parameter setHeight method in Figure 7.10 to make it test its units parameter to see if units is equal to one of the following allowable symbols: “m,” “cm,” “mm,” “in,” or “ft.” If it is equal to one of these, set the instance variables and return true. If it is not equal to one of these, return false.

b)Does this modification require any change to any program that calls the two-argument setHeight method? Why or why not?

c)Write a statement that calls the modified method and utilizes the returned information to print an error message “Error: units not recognized” if the units argument is not one of the allowed values.