Java 为什么我的投票模拟器不工作？

为了完成一项学校作业，我制作了一台计票机并将选票打印出来。下面是VotingMachine类及其所有方法

public class VotingMachine {
//declaring instance variables
private int democratVotes;
private int republicanVotes;
private int independentVotes;
//default constructor
public VotingMachine(){
}

//parameter constructor for changing values
public VotingMachine(int demVotes, int repubVotes, int indeVotes){
this.democratVotes = demVotes;
this.republicanVotes = repubVotes;
this.independentVotes = indeVotes;
}
//getter methods
public int getDemocratVotes(){
return democratVotes;
}
public int getRepublicanVotes(){
return republicanVotes;
}
public int getIndependentVotes(){
return independentVotes;
}
//setter methods
public void setDemocratVotes(int votes){
this.democratVotes = votes;
}
public void setRepublicanVotes(int votes){
this.republicanVotes = votes;
}
public void setIndependentVotes(int votes){
this.independentVotes = votes;
}
//increment votes by 1 methods
public void voteDemocrat(){
democratVotes += 1;
}
public void voteRepublican(){
republicanVotes += 1;
}
public void Independent(){
independentVotes += 1;
}
//overloaded methods (methods with same names as above)
public void voteDemocrat(int votes){
democratVotes += votes;
}
public void voteRepublican(int votes){
republicanVotes += votes;
}
public void voteIndependent(int votes){
independentVotes += votes;
}
//method to clear all votes
public void clearVote(){
democratVotes = 0;
republicanVotes = 0;
independentVotes = 0;
}
//method to calculate total votes
public int totalVotes(){
int totalVotes = democratVotes + republicanVotes + independentVotes;
return totalVotes;
}
//methods to calculate percentages while calling totalVotes()
public double percentDemocrat(){
double percentDemocrat = democratVotes / totalVotes();
return percentDemocrat;
}
public double percentRepublican(){
double percentRepublican = republicanVotes / totalVotes();
return percentRepublican;
}
public double percentIndependent(){
double percentIndependent = independentVotes / totalVotes();
return percentIndependent;
}

//method to print statistics
public void percentStats(){
System.out.println("Democrats: " + democratVotes);
System.out.println("Republicans: " + republicanVotes);
System.out.println("Independent: " + independentVotes);
System.out.println("Total Votes: " + totalVotes());
System.out.println("Percent Democrat Votes: " + percentDemocrat());
System.out.println("Percent Republican Votes: " + percentRepublican());
System.out.println("Percent Independent Votes: " + percentRepublican());
}
}

这是我在项目中使用的驱动程序：

public class MachineDriver {

    public static void main(String[] args) {
        VotingMachine test = new VotingMachine();
        test.voteDemocrat();
        test.voteDemocrat();
        test.voteRepublican();
        test.voteIndependent();
        test.percentStats();
    }
}

然而，当我运行该程序时，百分比民主党人、百分比共和党人和百分比独立党都显示为0.0。我做错了什么？以下是控制台中显示的内容：

民主党：2 共和党：1 独立调查：1 总票数：4 民主党得票率：0.0 共和党得票率：0.0

---

独立投票率：0.0

你在除以整数，这就是为什么你得到的结果等于零

可以将整数强制转换为双精度

public double percentDemocrat(){
    double percentDemocrat = ((double)democratVotes) / totalVotes();
    return percentDemocrat;
}

在

percentdemocrator（）

和其他方法中，用于数学运算的数字是

int

s。您需要将它们转换为

float

s（或

double

s）以获得正确的浮点答案。例如：

double PercentDemocratic=（double）Democratics Voces/（double）TotalVoces（）