pascalstriangle.java

public class PascalTriangleInJava {

    public static void main(String[] args) {

        System.out.println("Please enter number of rows of Pascal's triangle");
        
     
        try (Scanner scnr = new Scanner(System.in)) {
            int rows = scnr.nextInt();            
            System.out.printf("Pascal's triangle with %d rows %n", rows);
            printPascalTriangle(rows);
        }
    }

    
    public static void printPascalTriangle(int rows) {
        for (int i = 0; i < rows; i++) {
            int number = 1;
            System.out.printf("%" + (rows - i) * 2 + "s", "");
            for (int j = 0; j <= i; j++) {
                System.out.printf("%4d", number);
                number = number * (i - j) / (j + 1);

            }
            System.out.println();
        }
    }

}