Christmas Tree Pattern in Java

In this section, we will create Christmas Tree Pattern program in Java in three different designs. The Christmas tree pattern also known as Xmas patten.

ChristmasTreePattern1.java

import java.util.Scanner;
public class ChristmasTreePattern1
{
public static void main(String args[]) 
{
Scanner sc = new Scanner(System.in);
System.out.print("Enter the height of tree: ");
int h = sc.nextInt();
//beginning of upper part
for(int i = 1;i <= h;i++)
{
for(int j = h-i;j > 0;j--)
{
System.out.print(" ");
}
for(int k = 1;k <= i;k++)
{
System.out.print("* ");
}
System.out.println();
}
//end of upper part
//beginning of lower part
for(int i = 1;i <= h-1;i++)
{
System.out.print(" ");
for(int j = h-3;j > 0;j--)
{
System.out.print(" ");
}
for(int k = 2;k > 0;k--)
{
System.out.print("| ");
}
System.out.println();
}// end of lower part
}
}

Output:

Let's write Java program for another Christmas tree pattern.

ChristmasTreePattern2.java

import java.util.Scanner;
public ChristmasTreePattern
{
public static void main(String args[])
{
Scanner sc = new Scanner(System.in);
System.out.print("Enter the height of the Tree: ");
//reads height of the tree
int h = sc.nextInt();
System.out.print("Enter the width of the Tree: ");
//reads width of the tree
int w = sc.nextInt();
//calculates spaces
int space = w*5;
int x = 1;
for(int a = 1; a <= h; a++)
{
for(int i = x; i <= w; i++)
{
//loop for space
for(int j = space; j >= i; j--)
{
System.out.print(" ");
}
for(int k = 1;k <= i;k++)
{
System.out.print("* ");
}
System.out.println();
}
x = x+2;
w = w+2;
}
for(int i = 1; i <= 4; i++)
{
for(int j = space-3; j >= 1; j--)
{
//prints spaces
System.out.print(" ");
}
//loop to print t star
for(int k= 1; k <= 4; k++)
{
System.out.print("* ");
}
//throws cursor to the next line
System.out.println();
}
}
}

Output:

Let's write Java program for another Christmas tree pattern.

ChtrismasTreePattern3.java

public class ChtrismasTreePattern3
{
public static void main(String args[]) 
{
for(int i=1; i<=4; i++)
{
for(int k=1; k<=5-i+1; k++)
{
System.out.print(" ");
}
for(int j=1; j<=2*i-1; j++)
{
System.out.print("*");
}
System.out.println();
}
// Second
for(int i=1; i<=4; i++)
{
for(int k=1; k<=4-i+1; k++)
{
System.out.print(" ");
}
for(int j=1; j<=2*i+1; j++)
{
System.out.print("*");
}
System.out.println();
}
// third
for(int i=1; i<=4; i++)
{
for(int k=1; k<=3-i+1; k++)
{
System.out.print(" ");
}
for(int j=1; j<=2*i+3; j++)
{
System.out.print("*");
}
System.out.println();
}
// Forth
for(int i=1; i<=2; i++)
{
for(int k=1; k<=5; k++)
{
System.out.print(" ");
}
for(int j=1; j<=1; j++)
{
System.out.print("*");
}
System.out.println();
}
System.out.print("  *******");
}
}

Output: