Java继承关系中，子父类的静态代码块、代码块、构造器的执行顺序

深碍√TFBOYSˉ_ 2023-01-02 14:22 185阅读 0赞

突然对子父类的静态代码块、代码块、构造器的执行顺序有点疑惑，想不起来了，赶紧测一把，记录下

**父类**

public class StaticClassParent { 
    
        static { 
            System.out.println("StaticClassParent static 代码块...............");  // 1
        }
    
        { 
            System.out.println("StaticClassParent 代码块..................");      // 3
        }
    
        public StaticClassParent(){ 
            System.out.println("StaticClassParent 构造器................");        // 4
        }
    }

**子类**

public class StaticClass extends  StaticClassParent { 
    
        static { 
            System.out.println(" StaticClass static 代码块...............");    // 2
        } 
    
        { 
            System.out.println(" StaticClass代码块..................");         // 5 
        }
    
        public StaticClass(){ 
            System.out.println(" StaticClass StaticClass 构造器................"); // 6
        }
    }

**测试类**

@Test
        public void test(){ 
            StaticClass staticClass = new StaticClass();
        }

**输出**

StaticClassParent static 代码块...............
        StaticClass static 代码块...............
    StaticClassParent 普通代码块..................
    StaticClassParent 构造器................
        StaticClass 普通代码块..................
        StaticClass 构造器................

**结论**：

静态代码块 -> 普通代码块 -> 构造器

父类静态代码块 -> 子类静态代码块 -> 父类代码块 -> 父类构造器 -> 子类代码块 -> 子类构造器