Class加载的一个有趣的例子

看一下下面两个程序的执行结果

class Singleton {

    private static  Singleton singleton = new Singleton();
    public static int count1 =;
    public static int count2 = 0;

    public static  Singleton getInstance() {
        return singleton;
    }

    private Singleton() {  
        ++count1;
        count2++;
    }
}
public class Test1 {

    public static void main(String[] args) {

        Singleton singleton = Singleton.getInstance();
        System.out.println("1  " + singleton.count1);
        System.out.println("2  " + singleton.count2);
    }
}

------------------------------------------------------------------------------------
class Singleton {

    
    public static int count1 =;
    public static int count2 = 0;
        private static  Singleton singleton = new Singleton();
    public static  Singleton getInstance() {
        return singleton;
    }

    private Singleton() {  
        ++count1;
        count2++;
    }
}
public class Test1 {

    public static void main(String[] args) {

        Singleton singleton = Singleton.getInstance();
        System.out.println("1  " + singleton.count1);
        System.out.println("2  " + singleton.count2);
    }
}

最后的结果是多少？
答案：
1 1
2 0
1 1
2 1