Pascal Triangle (Stars)

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
class PatternOne{
    static int getInput(String prompt){
        System.out.print(prompt);
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        while(true){
            try{
                return Integer.parseInt(br.readLine());
            } catch(IOException | NumberFormatException nfe){
                System.out.print("Exception in input! Try again: ");
            }
        }
    }
    public static void main(String args[]){
        int i, j, n = getInput("Enter the number of rows:  ");
        for(i = 1; i <= ((n+1)/2); i++){
                for(j = 0; j <((n+1)/2)-i ; j++) System.out.print(" ");
                for(j = 0; j < i; j++) System.out.print("* ");
                System.out.println();
        }
        for(i = 1; i < ((n+1)/2); i++){
            for(j = 0; j < i; j++) System.out.print(" ");
            for(j = 0; j < ((n+1)/2)-i; j++) System.out.print("* ");
            System.out.println();
        }
    }
}
/*Output:-
Enter the number of rows:  9
    *
   * *
  * * *
 * * * *
* * * * *
 * * * *
  * * *
   * *
    *
*/