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Java program to print Floyd's triangle

This java program prints Floyd's triangle.

Java programming source code

import java.util.Scanner;
class FloydTriangle
   public static void main(String args[])
      int n, num = 1, c, d;
      Scanner in = new Scanner(;
      System.out.println("Enter the number of rows of floyd's triangle you want");
      n = in.nextInt();
      System.out.println("Floyd's triangle :-");
      for ( c = 1 ; c <= n ; c++ )
         for ( d = 1 ; d <= c ; d++ )
            System.out.print(num+" ");

Download Floyd's triangle program class file.

Output of program:
Floyd triangle program

In Floyd triangle there are n integers in the nth row and a total of (n(n+1))/2 integers in n rows. This is a simple pattern to print but helpful in learning how to create other patterns. Key to develop pattern is using nested loops appropriately.