Java父类与子类执行顺序

定义父类:

 1 public class Father {
 2     public Father() {
 3         System.out.println("father init");
 4     }
 5     
 6     static {
 7         System.out.println("father static init");
 8     }
 9     
10     public void eat() {
11         System.out.println("fahter eat");
12     }
13 }

定义子类:

 1 public class Son extends Father {
 2     public Son() {
 3         System.out.println("son init");        
 4     }
 5     
 6     static {
 7         System.out.println("son static init");
 8     }
 9     
10     @Override
11     public void eat() {
12         System.out.println("son eat");
13     }
14 }

验证执行顺序:

1 public class orderTest {
2     public static void main(String[] args) {
3         Father son = new Son();
4         son.eat();
5     }
6 }

执行结果:

father static init
son static init
father init
son init
son eat

执行顺序为:

1、父类的静态代码块

2、子类静态代码块

3、父类构造方法

4、子类构造方法

5、子类的实例方法

原文地址:https://www.cnblogs.com/asenyang/p/15441429.html