class Day {

	private int year, month, day;

	public Day(int y, int m, int d) {
		this.year = y; this.month = m; this.day = d;
	}

	// Return a string for the day like dd MMM yyyy
	public String toString() {
		final String[] MonthNames = {
				"Jan", "Feb", "Mar", "Apr", "May", "Jun", 
				"Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
		return day + " " + MonthNames[month - 1] + " " + year;
	}
}

public class Main_testVarDay {

	private static void testing1() {
		Day d1;
		// System.out.println(d1); //Error: The local variable d1 may not have been
		// initialized
		// System.out.println(d1.toString()); //Error: The local variable d1 may not
		// have been initialized
	}

	private static void testing2() {
		Day d1;
		d1 = null;
		System.out.println(d1); // print: null
		System.out.println(d1.toString()); // Runtime exception: java.lang.NullPointerException
	}

	private static void testing3() {
		Day d1 = new Day(2014, 1, 15);
		System.out.println(d1);				// something like DayX@2d4b1fda
		System.out.println(d1.toString());	// something like DayX@2d4b1fda
	}

    public static void main(String[] args) {
        // testing1();
        // testing2();
        testing3();
    }
}