为什么我的变量没有返回答案？

Question

So I'm trying to construct a program. Everything works but my math portion of the program. I want the time in mins entered to be converted to hours. This should be a decimal number like 30 mins=.5 hrs. I'll try to omit as much code as I can that I don't think is relevant to make it easier to read.

public class StudentReader
{
    private static String studentName= "";
    private static int pages;
    private static int time;
StudentReader(String name,int pagenum, int totalTime)
    {
        studentName=name;
        pages=pagenum;
        time=totalTime;
    }
public double getTotalTimeInHours()
    {
        double total=0;
        total=time / 60;
        return total;

    }
}

This class is being called by another class:

System.out.println("What is the total amount of time spent reading?: ");
totalTime=scanner.nextInt();
System.out.println(StudentReader.getTotalTime());

Answer 1

This is one problem:

total=time / 60;

Both time and 60 are int values, so it uses integer division, and then promotes the result to a double value in order to assign it to total .

This simple change will force it to use double arithmetic:

total=time / 60.0;

However, given that you don't actually do anything else with total other than return it, the code would be simpler as:

public double getTotalTimeInHours() {
    return time / 60.0;
}

Additionally, as Leeish pointed out, you're trying to call it as getTotalTime , which isn't the method name...