一道关于静态变量的初始化顺序面试题

package com.test; public class StaticTest { private static StaticTest st = new StaticTest(); public static int count1; public static int count2 = 0; public static StaticTest getInstance() { return st; } private StaticTest() { count1++; count2++; } public static void main(String[] args) { //静态变量的执行顺序在程序中是从上到下顺序执行的，因此在调用StaticTest.getInstance()时执行过程是： //private static StaticTest st = new StaticTest();-->private StaticTest(){}-->public static int count1;-->public static int count2 = 0; StaticTest st = StaticTest.getInstance(); System.out.println("count1:" + st.count1);//输出为1 System.out.println("count2:" + st.count2);//输出为0 } }