Java任务，弄了半天，也没有图片一样的效果

你没打空格呀

不要搞花里胡哨的了，有结果就行

public class Test02 {
    public static void main(String[] args) {
        System.out.println("    *    ");
        System.out.println("   ***   ");
        System.out.println("  *****  ");
        System.out.println(" ******* ");
        System.out.println("*********");
    }
}

public class Test02 {
    public static void main(String[] args) {
        for (int i = 1; i <= 5; i++) {
            for (int j = 1; j <= 5 - i; j++) {
                System.out.print(" ");
            }
            for (int j = 1; j <= 2 * i - 1; j++) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}