test39.java

来自「SCJP认证考试资料」· Java 代码 · 共 19 行

class A {
    int b = 10;
    private A() {
	this.b=7;
    }
    int f() {
	return b;
    }
}
class B extends A {
    int b;
}
class Test39 {
    public static void main(String[] args) {
    A a = new B();
    System.out.println(a.f());
    }
}