package com.mufeng.theseventhchapter;

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

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

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

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

package com.mufeng.theseventhchapter;

public class Beetle extends Insect {
	private int k = printInit("Beetle.k initialized");

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

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

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

输出结果

static Insect.x1 initialized
static Beetle.x2 initialized
Beetle constructor
i = 9, j = 0
Beetle.k initialized
k = 47, j = 39