急急急！编写程序

package 娱乐;

class printf {
public static void main(String[] args) {
String bb = "";
int aa = 9;
boolean fo = true, foo = false;
for (int i = 0; i < 7; i++) {
if (fo)
aa -= 2;
if (foo) {
aa += 2;
}
if (aa == 1) {
fo = false;
foo = true;
}
for (int ii = aa; ii > 0; ii--) {
bb += "*";
}
System.out.println(bb);
bb = "";
}
}
}

//看下这个..你的是1 3 5 7行对的吧?

public class FirstSample {
public static void main(String[] args) {
System.out.println("*******");
System.out.println("*****");
System.out.println("***");
System.out.println("*");
System.out.println("***");
System.out.println("*****");
System.out.println("*******");
}
}
虽然这个办法有点笨

class printf
{