import java.awt.*;
import javax.swing.*;

public class Recursive{
String outPut;

public static void main(String[] args){

for(long counter = 1;counter <= 10;counter++)
System.out.println(counter + "! =" + factorial(counter) + "\n");


}
public long factorial(long n){ //不能调用静态方法
if(n <= 1)
return 1;
else
return n * factorial(n - 1);
}
}

感谢指点，不过还是有些糊涂，
慢慢来，如果我写成Applet就行了。