java基础面试题

public class A {
    public int i = 10;

    public static void test(A a) {
        a.i += 10;
    }

    public static void main(String[] args) {
        A a = new A();
        test(a);
        System.out.println(a.i);

        A b = a;
        test(b);
        System.out.println(a.i);
        System.out.println(b.i);

        A c = a;
        c.i = 0;

        System.out.println(c.i);
        System.out.println(b.i);
        System.out.println(a.i);
    }
}