Explain creating a pyramid in Java

Question

I am in a beginner java programming class and currently reviewing loops. If there is one thing I just do not understand, it\'s pyramids. I have researched the book exercis

Answer 1

public static void main(String[] args) {

    // levels in the pyramid
    int x = 5;

    for (int i = 1; i <= x; i++) {
        // for spacing
        for (int j = 1; j <= x - i; j++){                System.out.print("   ");            }           // left half of the pyramid             for (int k = i; k >= 1; k--){
            System.out.print((k >= 10) ? +k : "  " + k);
        }
        // corresponding right half of the pyramid
        for (int k = 2; k <= i; k++) {               System.out.print((k >= 10) ? +k : "  " + k);
        }
        // next line
        System.out.println();
    }
}

Credit: http://www.skilledmonster.com/2013/10/28/java-pyramid-example-pattern-11/