java中继承的初始化过程

假设有这样的继承场景(如下面代码所示):

父类:

package com.java.test.multiflex;

public class Insect {
private int i = 9;
protected int j;


Insect() {
System.out.println("i=" + i + ",j+" + j);
j = 39;
}

private int test=printInit("test hello wangjjh");


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


static int printInit(String s) {
System.out.println(s);
return 47;
}
}

子类:

package com.java.test.multiflex;


public class Beetle extends Insect {

public Beetle(){
System.out.println("k="+k);
System.out.println("j="+j);
}

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

public static void main(String[] args) {
System.out.println("Beetle constructor");
Beetle b = new Beetle();
}

}

执行结果:

static Insect.x1 initialized
static Beetl.x2 initialized
Beetle constructor
test hello wangjjh
i=9,j+0
Beetle.k initialized
k=47
j=39

通过执行结果可以很明确的知道具体的初始化过程.