End Of line, java scanner mac

Question

I have a program which I am trying to run but I don't know How can I end the scanner input. In the assignment we have this note the we can simple press (ctrl+z) for windows and (ctrl+d) for linux but I am using mac and I have tried it but didn't work.I also tried (cmd +d) and (cmd+z) but didn't work. this is my program:

package F1;

import java.io.PrintStream;
import java.util.Scanner;



public class HatzelKlatzer{
public static final int STARTING_YEAR=1950,
                           FINAL_YEAR=2050;
PrintStream out;

HatzelKlatzer(){
    out=new PrintStream(System.out);
}

//method which will print the percentage
void printPercentage(double percentage){
    out.printf("The percentage is: %d",percentage);
}


//TODO Make a method which will read the input if its in range and returns the result
int readInRange(Scanner input,int startDate,int endDate){
    int result=input.nextInt();

    if(result>endDate || result<startDate){
        System.exit(1);
    }

    return result;
    }



//TODO method if month is odd
Boolean oddMonth(Scanner input){

    readInRange(input,1,31);

    int month=readInRange(input,1,12);

    readInRange(input,STARTING_YEAR,FINAL_YEAR);



    return month%2 !=0;
}

void start()
{
    Scanner in=new Scanner(System.in);
    int seizures=0,
    numberInOddMonths=0;

    //while loop to count the seizures and months odd
    while(in.hasNext()){
        String date=in.nextLine();

        Scanner dateReader=new Scanner(date);

        if(oddMonth(dateReader)){
            numberInOddMonths +=1;
        }
        seizures +=1;
    }

    //calculating the percentage
    double percentage=((double)numberInOddMonths/seizures)*100 ;
    printPercentage(percentage);
}

public static void main(String[] args){
    new HatzelKlatzer().start();

}
}

and it takes input like

12 1 2005
1 1 1995
....etc

But I don't know how to let the scanner know that this is end of the input. Thankyou and please guide me how can it be done...I am just a beginner.

Thanks

Cat.