Sunday, October 11, 2015

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Java Program To Display Date

The program below is the answer to Deitel's Java How to Program (9th Edition) Chapter 3 Exercise 3.15.

Question: Create a class called Date that includes three instance variables — a month (type int), a day (type int) and a year (type int). Provide a constructor that initializes the three instance variables and assumes that the values provided are correct. Provide a set and a get method for each instance variable. Provide a method displayDate that displays the month, day and year separated by forward slashes (/). Write a test application named DateTest that demonstrates class Date’s capabilities.

To run the application save both files with the same name as the class (because it is a public class) and with the .java file extension (in this case and Then compile both classes and run DateTest. Date will not run because it does not have a main method.

To compile both classes at the same time using the command prompt, use the command

To run DateTest, use the command
java DateTest

 * @Author: Aghatise Osazuwa
 * Website:
 * Exercise 3.15 - Date Class
 * This Program Display Date In The Format mm/dd/yy

public class Date {

    private int monthdate;
    private int daydate;
    private int yeardate;
    public Date (int month, int day, int year) {
        monthdate = month;
        daydate = day;
        yeardate = year;
    public void setMonth (int month) {
        monthdate = month;
    public int getMonth() {
        return monthdate;
    public void setday (int day) {
        daydate = day;
    public int getDay() {
        return daydate;
    public void setYear (int year ) {
        yeardate = year;
    public int getYear() {
        return yeardate;
    public void displayDate () {
        System.out.printf ("%d/%d/%d\n", getMonth(), getDay(), getYear());


Below is Class to test Class

//Exercise 3.15 - Date Class Test
//This Program Demonstrates Class Date Capabilities

import java.util.Scanner;

public class DateTest {
    public static void main (String [] args) {
        Date display = new Date (0,0,0);

        Scanner input = new Scanner (;
        int month;
        int day;
        int year;
        System.out.print ("Enter Month: ");
        month = input.nextInt();
        System.out.println ();
        System.out.print ("Enter Day: ");
        day = input.nextInt();
        System.out.println ();
        System.out.print ("Enter Year: ");
        year = input.nextInt();
        System.out.println ();


Click here to see other answers to Java How to Program.


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