Java program to print a pyramid of numbers using for loop

 
import java.io.BufferedReader;
import java.io.InputStreamReader;

public class GeneratePyramidExample 
{
	public static void main (String[] args) throws Exception
	{
		BufferedReader keyboard = new BufferedReader (new InputStreamReader(System.in));
		System.out.println("Enter Number:");
		int as= Integer.parseInt (keyboard.readLine());
		System.out.println("Enter X:");
		int x= Integer.parseInt (keyboard.readLine());
		int y = 0;
		for(int i=0; i<= as ;i++)
		{
			for(int j=1; j <= i ; j++)
			{
				System.out.print(y + "t");
				y = y + x;
			}
			System.out.println("");
		}
	}
}

 
Enter Number:
5
Enter X:
10

0	
10	20	
30	40	50	
60	70	80	90	
100	110	120	130	140