please add comment every line of code:

Design and implement a simplified voting machine class with the following specification. A

voting machine has a list of candidates and the following methods:

i) addCandidate(String name) /* Add a candidate with the name to the list */

ii) castVote(String name) /* Cast a vote to the candidate with the name */

iii) printResults() /* Print out the number of votes each candidate has received. The

order does not matter */

Assume that only two attributes of a candidate, namely, the name and number of votes, are of

interest here, and the size of the candidate list is unknown in advance.