繼承父類的靜態方法的加載順序

 

public class GrandFather {

    static{
        System.out.println("GrandFather在靜態代碼塊");
    }
}



public class Father extends GrandFather{

    static{
        System.out.println("Father在靜態代碼塊");
    }

    public static int fatherAge = 55;

    public Father(){
        System.out.println("我是Father~");
    }

}




public class Son extends Father{

    static {
        System.out.println("Son在靜態代碼塊");
    }

    public static int sonAge = 25;

    public Son(){
        System.out.println("我是Son~");
    }

}

 測試：

public class FGSTest{

    public static void main(String[] args) {

        System.out.println("main歲數:" + Son.fatherAge); //入口  1
       // System.out.println("main歲數:" + Son.sonAge); //入口  2

    }

}

結果：

GrandFather在靜態代碼塊
Father在靜態代碼塊
main歲數:55

 

public class FGSTest{

    public static void main(String[] args) {

        //System.out.println("main歲數:" + Son.fatherAge); //入口  1
        System.out.println("main歲數:" + Son.sonAge); //入口  2

    }

}

 結果：

GrandFather在靜態代碼塊
Father在靜態代碼塊
Son在靜態代碼塊
main歲數:25