Program:

public class Ch01PP04
{
	public static void main(String[] args)
	{
		firstDay();
		secondDay();
		thirdDay();
		fourthDay();
		fifthDay();
		sixthDay();
		seventhDay();
		eighthDay();
		ninthDay();
		tenthDay();
		eleventhDay();
		twelfthDay();
	}

	public static void firstDay()
	{
		System.out.println("On the first day of Christmas,");
		System.out.println("my true love sent to me");
		day1();
	}

	public static void secondDay()
	{
		System.out.println("On the second day of Christmas,");
		System.out.println("my true love sent to me");
		day2();
	}

	public static void thirdDay()
	{
		System.out.println("On the third day of Christmas,");
		System.out.println("my true love sent to me");
		day3();
	}

	public static void fourthDay()
	{
		System.out.println("On the fourth day of Christmas,");
		System.out.println("my true love sent to me");
		day4();
	}

	public static void fifthDay()
	{
		System.out.println("On the fifth day of Christmas,");
		System.out.println("my true love sent to me");
		day5();
	}

	public static void sixthDay()
	{
		System.out.println("On the sixth day of Christmas,");
		System.out.println("my true love sent to me");
		day6();
	}

	public static void seventhDay()
	{
		System.out.println("On the seventh day of Christmas,");
		System.out.println("my true love sent to me");
		day7();
	}

	public static void eighthDay()
	{
		System.out.println("On the eighth day of Christmas,");
		System.out.println("my true love sent to me");
		day8();
	}

	public static void ninthDay()
	{
		System.out.println("On the ninth day of Christmas,");
		System.out.println("my true love sent to me");
		day9();
	}

	public static void tenthDay()
	{
		System.out.println("On the tenth day of Christmas,");
		System.out.println("my true love sent to me");
		day10();
	}

	public static void eleventhDay()
	{
		System.out.println("On the eleventh day of Christmas,");
		System.out.println("my true love sent to me");
		day11();
	}

	public static void twelfthDay()
	{
		System.out.println("On the twelfth day of Christmas,");
		System.out.println("my true love sent to me");
		day12();
	}

	public static void day1()
	{
		System.out.println("a partridge in a pear tree.");
		System.out.println();
	}

	public static void day2()
	{
		System.out.println("two turtle doves, and");
		day1();
	}

	public static void day3()
	{
		System.out.println("three French hens,");
		day2();
	}

	public static void day4()
	{
		System.out.println("four calling birds,");
		day3();
	}

	public static void day5()
	{
		System.out.println("five golden rings,");
		day4();
	}

	public static void day6()
	{
		System.out.println("six geese a-laying,");
		day5();
	}

	public static void day7()
	{
		System.out.println("seven swans a-swimming,");
		day6();
	}

	public static void day8()
	{
		System.out.println("eight maids a-milking,");
		day7();
	}

	public static void day9()
	{
		System.out.println("nine ladies dancing,");
		day8();
	}

	public static void day10()
	{
		System.out.println("ten lords a-leaping,");
		day9();
	}

	public static void day11()
	{
		System.out.println("eleven pipers piping,");
		day10();
	}

	public static void day12()
	{
		System.out.println("Twelve drummers drumming,");
		day11();
	}
}

Output:

On the first day of Christmas,
my true love sent to me
a partridge in a pear tree.

On the second day of Christmas,
my true love sent to me
two turtle doves, and
a partridge in a pear tree.

On the third day of Christmas,
my true love sent to me
three French hens,
two turtle doves, and
a partridge in a pear tree.

On the fourth day of Christmas,
my true love sent to me
four calling birds,
three French hens,
two turtle doves, and
a partridge in a pear tree.

On the fifth day of Christmas,
my true love sent to me
five golden rings,
four calling birds,
three French hens,
two turtle doves, and
a partridge in a pear tree.

On the sixth day of Christmas,
my true love sent to me
six geese a-laying,
five golden rings,
four calling birds,
three French hens,
two turtle doves, and
a partridge in a pear tree.

On the seventh day of Christmas,
my true love sent to me
seven swans a-swimming,
six geese a-laying,
five golden rings,
four calling birds,
three French hens,
two turtle doves, and
a partridge in a pear tree.

On the eighth day of Christmas,
my true love sent to me
eight maids a-milking,
seven swans a-swimming,
six geese a-laying,
five golden rings,
four calling birds,
three French hens,
two turtle doves, and
a partridge in a pear tree.

On the ninth day of Christmas,
my true love sent to me
nine ladies dancing,
eight maids a-milking,
seven swans a-swimming,
six geese a-laying,
five golden rings,
four calling birds,
three French hens,
two turtle doves, and
a partridge in a pear tree.

On the tenth day of Christmas,
my true love sent to me
ten lords a-leaping,
nine ladies dancing,
eight maids a-milking,
seven swans a-swimming,
six geese a-laying,
five golden rings,
four calling birds,
three French hens,
two turtle doves, and
a partridge in a pear tree.

On the eleventh day of Christmas,
my true love sent to me
eleven pipers piping,
ten lords a-leaping,
nine ladies dancing,
eight maids a-milking,
seven swans a-swimming,
six geese a-laying,
five golden rings,
four calling birds,
three French hens,
two turtle doves, and
a partridge in a pear tree.

On the twelfth day of Christmas,
my true love sent to me
Twelve drummers drumming,
eleven pipers piping,
ten lords a-leaping,
nine ladies dancing,
eight maids a-milking,
seven swans a-swimming,
six geese a-laying,
five golden rings,
four calling birds,
three French hens,
two turtle doves, and
a partridge in a pear tree.