相信我們在面試Java的時候總會有一些公司要做筆試題目的，而Java類的加載和對象創建流程的知識點也是常見的題目之一。接下來通過實例詳細的分析一下：

package com.test;

public class Parent {

    int a = 10;
    static int b =11;
    //靜態代碼塊
    static {
        System.out.println("parent靜態代碼塊：b=" + b);
        b++;
    }
    //代碼塊
    {
        System.out.println("Parent代碼塊：a=" + a);
        System.out.println("Parent代碼塊：b=" + b);
        b++;
        a++;
    }
    //無參構造函數
    Parent(){
        System.out.println("Parent無參構造函數:a=" + a);
        System.out.println("Parent無參構造函數:b=" + b);
    }
    //有參構造函數
    Parent(int a){
        System.out.println("Parent有參構造函數:a=" + a);
        System.out.println("Parent有參構造函數:b=" + b);
    }
    //方法
    void function(){
        System.out.println("Parent function run ......");
    }
}

package com.test;

public class Child extends Parent {

    int x = 10;
    static int y = 11;
    //靜態代碼塊
    static {
        System.out.println("Child靜態代碼塊：y=" + y);
        y++;
    }
    //代碼塊
    {
        System.out.println("Child代碼塊：x=" + x);
        System.out.println("Child代碼塊：y=" + y);
        y++;
        x++;
    }
    //構造函數
    Child(){
        System.out.println("Child無參構造函數:x" + x);
        System.out.println("Child無參構造函數:y=" + y);
    }
    //方法
    void function(){
        System.out.println("Child function run ......");
    }

}

package com.test;

public class testPC {
    public static void main(String[] args) {

        Child demo = new Child();
        demo.function();
        System.out.println("............................................................");
/*        Child child = new Child();
        child.function();*/
    }
}


結果：
 

parent靜態代碼塊：b=11
Child靜態代碼塊：y=11
Parent代碼塊：a=10
Parent代碼塊：b=12
Parent無參構造函數:a=11
Parent無參構造函數:b=13
Child代碼塊：x=10
Child代碼塊：y=12
Child無參構造函數:x11
Child無參構造函數:y=13
Child function run ......
............................................................
Parent代碼塊：a=10
Parent代碼塊：b=13
Parent無參構造函數:a=11
Parent無參構造函數:b=14
Child代碼塊：x=10
Child代碼塊：y=13
Child無參構造函數:x11
Child無參構造函數:y=14
Child function run ......

Java類的加載和對象創建流程的詳細分析