Java Program to Display Triangle of Numbers

Java Program to Display Triangle of Numbers

In java programming, this program is used to display triangle of numbers untill the limit value using nested do while loop and here limit value will be the user input.

import java.io.*;

public class TriangleNumbers {

   public static void main(String []args) throws IOException{
	   
	   int i=1, j=1, limit;
	   
	   DataInputStream in= new DataInputStream(System.in); 
	   System.out.print("Enter limit: ");
	   limit = Integer.parseInt(in.readLine());
	   
	   do
	   {
		   int k = limit;
		   do
		   {
			   System.out.print(" ");
			   k--;   
		   } while(k>=i);
		   j=1;
		   do
		   {
			   System.out.print(i+" ");
			   j++;
		   } while(j<=i);
		   System.out.println("");
		   i++;
		   
	   } while(i<=limit);

   }
} 

D:\Java_Programs>javac TriangleStars.java
D:\Java_Programs>java TriangleStars
Enter limit: 5
     1 
    2 2 
   3 3 3 
  4 4 4 4 
 5 5 5 5 5