Use Private Members from Base Class

class Insect {
    private int i = 9;
    Insect() {
        System.out.println("Insect.");
    }
    private int x1 = printInit("Insect.x1 initialized");
    //在导出类中不能访问基类的private成员函数print()，但可以访问printInit()（通过printInit()来访问private成员函数print()）.
    int printInit(String s) {
        System.out.println(this.toString());
        this.print(s);
        return 47;
    }
    private void print(String s){
        System.out.println(s);
    }
    //在导出类中不能访问基类的private数据成员i，但可以访问usePrivateVar()（通过usePrivateVar()来访问private数据成员）.
    public void usePrivateVar(){
        System.out.println(this.toString());
        System.out.println("i = " + this.i);
    }
}

public class beetle extends Insect {
    private int x2;
    private int k = printInit("beetle.k initialized");
    {
        x2 = printInit("beetle.x2 initialized");
    }
    public beetle() {
        System.out.println("beetle.");
    }
    public static void main(String[] args) {
        beetle b = new beetle();
        b.usePrivateVar();
    }
}