Calling a print method from another class with primitive data types in it

I have been programming in Java using BlueJ for 2 months and I need help with the assignment. I am doing a basic car purchase data entry program. I need to call a method printPurchaseDate()

from a class PurchaseDate

. The problem I am facing is that the print statement has three int values: year, month and day. When I try to call this method on the Vehicle class in the method printDetails()

, it tells me I need a return, if I pick up the void, I have to mark this method as a string. However, this doesn't work because it contains three intranet variables that conflict with the string method. How can i do this? I basically want to print all my information including PurchaseDate

. My apologies in advance if I did not present my question correctly, this is my first post. Thank you for your help.

I have two classes: date of purchase and vehicle.

My car class has this method designed to print my information:

public void printDetails() {
    System.out.println("Customer:" + " " +
    customer.getFullName());
    System.out.println("Vehicle Description:" + " " + 
    getVehiclePurchased());
    PurchaseDate.printPurchaseDate();
}

      

        
        
        
      

    

I am having problems printing the date from my PurchaseDate class in the "printDetails ()" method of my class.

/**
  * The Purchase data class
  */

public class PurchaseDate {

    private int year;
    private int month;
    private int day;

    private static final int CURRENT_YEAR = 2014;
    private static final int LAST_MONTH = 12;
    private static final int LAST_DAY = 31;

    /**
     * default constructor
     */
    public PurchaseDate() {
    }

    /**
     * @param year to initialize theYear field
     * @param month to initialize theMonth field
     * @param day to initialize theDay field
     */

    public PurchaseDate(int theYear, int theMonth, int theDay) {
    setYear(theYear);
    setMonth(theMonth);
    setDay(theDay);

    if (year < 1900 || year > 2014) {
            System.out.println("The year value can be no greater than the current year");
        } else {
            this.year = year; }
    if (month < 1 || month > 12) {
            System.out.println("The month value must be between 1 and 12");
        } else {
            this.month = month; }        
    if (day < 1 || day > 31) {
            System.out.println("The day value must be between 1 and 31");
       } else {
            this.day = day; }
    }        
    //Mutators and Accessors    
    /**
     * @return year
     */
    public int getYear() {  
        return year;
    }

    /**
     * @return month
     */
    public int getMonth() {
        return month;
    }

    /**
     * @return day
     */
    public int getDay() {
        return day;
    }

    /**
     * @param the year
     */
    public final void setYear(int newYear) {
        year = newYear;
    }

    /**
     * @param the month
     */
    public final void setMonth(int newMonth) {
        month = newMonth;
    }

    /**
     * @param the day
     */
    public final void setDay(int newDay) {
        day = newDay;
    }

    /**
     * prints the purchase date
     */
    public void printPurchaseDate() {
        System.out.println("The purchase date is:" + " " + year + "-" + month + "-" + day);

    }
}

      

        
        
        
      

    

Basically I want mine to System.out.println

print out the date that I have in class PurchaseDate

.