Question

Using your favorite IDE (e.g., Eclipse or NetBeans), create a new Java application (project) named CPS151_Lab3, or, if you are using DrJava, create a folder named CPS151_Lab3.

Then, to either your project or folder, add:

• a main class (if one is not automatically created),
• a VotingMachine class that models a voting machine. Make sure your new class is in the same package as the main class.

Add to the VotingMachine class:

• private integer data fields for the number of votes for each party (Democrat or Republican); initially, no votes have been cast for either party (data fields are initialized to 0).
• public member methods:
  • void clear(): clear the machine state (i.e., set number of votes for either party to 0),
  • void voteDem(): vote for a Democrat (i.e., add 1 to the number of votes for the Democratic party),
  • void voteRep(): vote for a Republican (i.e., add 1 to the number of votes for the Republican party),
  • int getDemVotes(): get the tally (number of votes) for the Democratic party,
  • int getRepVotes(): get the tally (number of votes) for the Republican party,
  • String getWinner(): return (as a String) the winner of the election based on the votes (i.e., either the string "Democrat" or "Republican").

Lab 3.2

Switch back to the main class and copy/paste the following below code to the main method:

public static void main(String[] args)
{
    VotingMachine machine = new VotingMachine();
    
    // randomly add 1,000 votes for either party
    for (int i=1; i<=1000; i++)
    {
        if (Math.random() < 0.5) { machine.voteDem(); }
        else { machine.voteRep(); }
    } // end for loop
    
    // show results of voting
    System.out.printf("The Democratic candidate won %d votes, ", machine.getDemVotes());
    System.out.printf("while the Republican candidate won %d votes, so ...\n", machine.getRepVotes());
    System.out.printf("The %s candidate won the election!\n", machine.getWinner());
} // end main

Answer 1

Thanks for the question. Here is the simple sort class VotingMachine.java class.
I am embedded the main() method inside and ran, and its working all good:!

Here is the code.

========================================================================================


public class VotingMachine {

    private int democratVotes;
    private int republicVotes;

    public VotingMachine() {
        democratVotes = 0;
        republicVotes = 0;
    }

    public void clear(){
        democratVotes=0;
        republicVotes=0;
        System.out.println("Reset done.");
    }

    public void voteDem(){
        democratVotes+=1;
    }

    public void voteRep(){
        republicVotes+=1;
    }

    public int getDemVotes() {
        return democratVotes;
    }

    public int getRepVotes() {
        return republicVotes;
    }

    public String getWinner(){

        if(democratVotes>republicVotes){
            return "Democrat";
        }else if(democratVotes<republicVotes){
            return "Republican";

        }else{
            return "Neither!";

        }
    }

    public static void main(String[] args)
    {
        VotingMachine machine = new VotingMachine();

        // randomly add 1,000 votes for either party
        for (int i=1; i<=1000; i++)
        {
            if (Math.random() < 0.5) { machine.voteDem(); }
            else { machine.voteRep(); }
        } // end for loop

        // show results of voting
        System.out.printf("The Democratic candidate won %d votes, ", machine.getDemVotes());
        System.out.printf("while the Republican candidate won %d votes, so ...\n", machine.getRepVotes());
        System.out.printf("The %s candidate won the election!\n", machine.getWinner());
    } // end main
}

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