Generate Pyramid For a Given Number

/*
	Generate Pyramid For a Given Number Example
	This Java example shows how to generate a pyramid of numbers for given
	number using for loop example.
*/
 
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("");
		}
	}
}
 
/*
Output of this example would be
 
Enter Number:
5
Enter X:
1
 
0	
1	2	
3	4	5	
6	7	8	9	
10	11	12	13	14
 
----------------------------------------------
 
Enter Number:
5
Enter X:
2
 
0	
2	4	
6	8	10	
12	14	16	18	
20	22	24	26	28
 
----------------------------------------------
 
Enter Number:
5
Enter X:
3
 
0	
3	6	
9	12	15	
18	21	24	27	
30	33	36	39	42
*/