class OrderTest { public static void main(String[] args) { System.out.println("main-start"); new OrderTest(); System.out.println("main-end"); } public static int method() { System.out.println("=====method========"); return 0; } { System.out.println("__构造块2start__"); } static { System.out.println("==静态块1start=="); } public static OrderTest t1 = new OrderTest(); static { System.out.println("==静态块2start=="); } public static OrderTest t2 = new OrderTest(); public static int x = method(); static { System.out.println("==静态块3start=="); } public OrderTest() { System.out.println("=======构造器-start========"); } { System.out.println("__构造块1start__"); } }
执行结果:
==静态块1start==
__构造块2start__
__构造块1start__
=======构造器-start========
==静态块2start==
__构造块2start__
__构造块1start__
=======构造器-start========
=====method========
==静态块3start==
main-start
__构造块2start__
__构造块1start__
=======构造器-start========
main-end
执行顺序:类加载之后,按从上到下执行被static修饰的语句, 如果有语句new了自身的对象,将从上到下执行构造代码块,构造器,创建完对象后,接着执行下面的static语句,
当static语句执行完之后,再执行main方法.
理所当然的,如果public static OrderTest t1 = new OrderTest();这样的语句放在其它static语句块之前,最先执行的将是构造代码块,构造器.然后才是静态代码块