Chapter 6, Problem 7P

We can improve the Beer class from the previous Practice Program by using principles of information hiding. The instance variable percent holds the percent of alcohol in the beer. If this variable is public, then someone might enter the alcohol percentage the wrong way. For example, if the alcohol percentage is 5% then someone might set the variable to 5.0 instead of 0.05 that the program expects. As a result, the program would compute that someone would be legally intoxicated after a miniscule sip of beer.

Address this problem by adding or modifying the mutator method, setAlcohol. If the variable that is being set is over 1 then set the alcohol variable to the incoming value divided by 100. Otherwise set the alcohol variable to the incoming value. You should also do this check for the percentage set by the constructor Test your program by sett1ng the percent alcohol to 5 0 and to 0 05 The results should be unchanged.