Java program to print patterns (2 Examples based on numbers pattern)

Program to print pattern 1 in java

import java.util.Scanner;

public class Pattern27 
{
	public static void main(String[] args) 
    {
		// create scanner class object.
        Scanner sc = new Scanner(System.in);
         
        // input row for printing pattern.
        System.out.print("Enter row for pattern : ");
         
        int rows = sc.nextInt();
        
        System.out.println("Here is your pattern....!!!");
         
        // loop for printing pattern.
        for (int i = 1; i <= rows; i++) 
        {
            for (int j = 1; j <= i; j++)
            {
                System.out.print(j+" ");
            }            
            System.out.println();
        }
        sc.close();
    }
}

Output

Enter row for pattern : 10
Here is your pattern....!!!
1 
1 2 
1 2 3 
1 2 3 4 
1 2 3 4 5 
1 2 3 4 5 6 
1 2 3 4 5 6 7 
1 2 3 4 5 6 7 8 
1 2 3 4 5 6 7 8 9 
1 2 3 4 5 6 7 8 9 10 

Program to print pattern 2 in java

import java.util.Scanner;

public class Pattern28 
{
	public static void main(String[] args) 
    {
		// create scanner class object.
        Scanner sc = new Scanner(System.in);
         
        // input row for printing pattern.
        System.out.print("Enter row for pattern : ");
         
        int rows = sc.nextInt();
         
        System.out.println("Here is your pattern....!!!");
        
        // this loop will print the pattern in two parts first half and second half.
        for (int i = rows; i >= 1; i--) 
        {
            for (int j = 1; j <= i; j++)
            {
                System.out.print(j+" ");
            }      
            System.out.println();
        }
        
        for (int i = 2; i <= rows; i++) 
        {
            for (int j = 1; j <= i; j++)
            {
                System.out.print(j+" ");
            }             
            System.out.println();
        }
        sc.close();
    }
}

Output

Enter row for pattern : 5
Here is your pattern....!!!
1 2 3 4 5 
1 2 3 4 
1 2 3 
1 2 
1 
1 2 
1 2 3 
1 2 3 4 
1 2 3 4 5