package reusing;//: reusing/Beetle.java

// The full process of initialization.

//加载类首先加载其父类，不管父类有没有被实例化。如果父类还有父类，以此类推

//加载的时候初始化static代码块，按其在源码中的顺序进行。

//实例化一个类，先实例化其父类，如果父类还有父类，以此类推。

import static net.mindview.util.Print.*;

class Insect {

private static int x1 = printInit("static Insect.x1 initialized");//47

protected int j;

private int i = 9;

Insect() {

print("i = " + i + ", j = " + j);

j = 39;

}

static int printInit(String s) {

print(s);

return 47;

}

}

public class Beetle extends Insect {

private static int x2 = printInit("static Beetle.x2 initialized");

private int k = printInit("Beetle.k initialized");

public Beetle() {

print("k = " + k);

print("j = " + j);

}

public static void main(String[] args) {///首先发现有加载类的必要

print("Beetle constructor");

Beetle b = new Beetle();//其次，发现有初始化的必要。//这里的new也有加载的必要，但是上面的static main方法已经进行了加载。就没有再加载，这里主要体现初始化的必要。

}

} /* Output:

static Insect.x1 initialized

static Beetle.x2 initialized

Beetle constructor

i = 9, j = 0

Beetle.k initialized

k = 47

j = 39

*///:~