JAVA中的靜態代碼塊 構造代碼塊 構造方法執行順序：

靜態代碼塊（類加載時執行）>>構造代碼塊>>構造方法

下面展示一個簡單的例子，推薦大家動手運行一遍：

public class Main {

    public static void main(String[] args) {
        son s = new son();
    }
    
}

//運行結果
father static area  //首先加載父類
father static block
son static area     //加載子類
son static block
father Constructor area  
 
//構造父類
father Constructor block
father constructor         //執行構造代碼塊再執行構造方法
son Constructor area     //構造子類
son Constructor block
son constructor              //執行構造代碼塊再執行構造方法

/*父類*/
public class father {
    private static String faterstaticArea = "father static area";

    static {
        System.out.println(faterstaticArea);
        System.out.println(
 
"father static block");
    }

    private String faterConstructorArea = "father Constructor area";
    {
        System.out.println(faterConstructorArea);
        System.out.println("father Constructor block");
    }

    father(){
        System.out.println("father constructor");
    }
}

//son繼承father
 

public class son extends father{
    private static String sonStaticArea = "son static area";

    static {
        System.out.println(sonStaticArea);
        System.out.println("son static block");
    }

    private String sonConstructorArea = "son Constructor area";
    {
        System.out.println(sonConstructorArea);
        System.out.println("son Constructor block");
    }

    son(){
        System.out.println("son constructor");
    }
}

Java面試題 靜態代碼塊 構造代碼塊 構造方法 的執行順序