测试一下静态内部类static修饰内容的初始化时机

Java

测试类：

public class InitializeClass {
    static {
        System.out.println("Outer Class static()");
    }
    public InitializeClass() {
        System.out.println("Outer Class instance()");
        InnerClassA classA = new InnerClassA();
    }
    public static class InnerClassA {
        private static int A = getA();
        private static int getA() {
            System.out.println("Inner Class Variable A");
            return 1;
        }
        private static int getB() {
            System.out.println("Inner Class Variable B");
            return 1;
        }
        static {
            System.out.println("Inner Class static()");
        }
        private static int B = getB();
        public InnerClassA() {
            System.out.println("Inner Class instance()");
        }
    }
    public static void main(String[] args) {
        new InitializeClass();
    }
}

输出：

Outer Class static()
Outer Class instance()
Inner Class Variable A
Inner Class static()
Inner Class Variable B
Inner Class instance()

可见静态内部类static{}的初始化时机在实例化流程开始之后
静态变量一样