/**
 * @author hjs
 * @date 2019/3/62:41
 * @Dec
 */
public class B {
    public static B t1 = new B();
    public static B t2 = new B();
    {
        System.out.println("父类构造块");
    }
    static {
        System.out.println("父类静态块");
    }
}

/**
 * @author hjs
 * @date 2019/3/62:35
 * @Dec
 */
public class A extends B {
    public static A t1 = new A();
    public static A t2 = new A();
    {
        System.out.println("构造块");
    }
    static {
        System.out.println("静态块");
    }
    public static void main(String[] args) {
        A t = new A();
    }
}

父类构造块、父类构造块、父类静态块、父类构造块、构造块、父类构造块、构造块、静态块、父类构造块、构造块

B1初始化的：父类构造块；
B2初始化的：父类构造块、父类静态块
A1初始化的：父类构造块、构造块
A2初始化的：父类构造块、构造块、静态块
main函数创建A时打印的：父类构造块、构造块