시험 직전 요약장

public class Main {
    static class Base {
        int recorded;
        Base() { recorded = read(); }
        int read() { return 6; }
    }
    static class Child extends Base {
        int level = 9;
        int read() { return level + 1; }
    }
    public static void main(String[] args) {
        Child c = new Child();
        System.out.println(c.recorded + ":" + c.read());
    }
}