test5.13

题目说来说去，就是说 static类型的变量只会定义一次

//prove the explain on page97 are right
class Cup
{Cup(int marker)
{System.out.println("Cup("+marker+")");}
void f(int marker)
{System.out.println("f("+marker+")");}
}
class Cups
{static Cup Cup1;
static Cup Cup2;
static {Cup1=new Cup(1);Cup2=new Cup(2);}
Cups(){System.out.println("Cups");}
}
public class Test13 {
public static void main(String[] args) {
System.out.println("Inside main()");
//Cups.Cup1.f(99);
}
//static Cups Cups1=new Cups();
//static Cups Cups2=new Cups();
}