java打印三角形

package struct;

public class TextDemo1 {
    public static void main(String[] args) {
        //打印三角形
        for (int i = 1; i <=5; i++) {
            for (int j = 5; j>= i; j--) {
                System.out.print(" ");
            }
            for (int j = 1; j <= i; j++) {
                System.out.print("X");
            }
            for (int j = 1; j