如下程序代码 的执行结果是
class Singleton { private static Singleton obj = new Singleton(); public static int counter1; public static int counter2 = 0; private Singleton() { counter1++; counter2++; } public static Singleton getInstance() { return obj; } } public class MyMain() public static void main(String[] args) { Singleton obj = Singleton.getInstance(); System.out.printIn("obj.counter1=="+obj.counter1); System.out.printIn("obj.counter2=="+obj.counter2); } }