JavaSE 面试题: 类初始化和实例初始化等

JavaSE 面试题 类初始化和实例初始化等

class Father {
    private int i = test();
    private static int j = method();

    static {
        System.out.print("(1)");
    }

    Father() {
        System.out.print("(2)");
    }

    {
        System.out.print("(3)");
    }

    public int test() {
        System.out.print("(4)");
        return 1;
    }

    public static int method() {
        System.out.print("(5)");
        return 1;
    }
}


public class Son extends Father {
    private int i = test();
    private static int j = method();

    static {
        System.out.print("(6)");
    }

    Son() {
        System.out.print("(7)");
    }

    {
        System.out.print("(8)");
    }

    public int test() {
        System.out.print("(9)");
        return 1;
    }

    public static int method() {
        System.out.print("(10)");
        return 1;
    }

    public static void main(String[] args) {
        Son son1 = new Son();
        System.out.println();
        Son son2 = new Son();
    }
}

参考答案

``` (5)(1)(10)(6)(9)(3)(2)(9)(8)(7) (9)(3)(2)(9)(8)(7) ```