package basic.constructor; /** * 代码已被笔记使用 */ class Father { public Father() { System.out.println("父类构造器执行"); i = 3; } { System.out.println("父类初始化块"); i = 2; } public int initI() { System.out.println("父类成员变量定义时赋值(显式初始化)"); return 1; } private int i = initI(); }