虚函数表

package xuhanshubiao;

public class Foo {
    void aFunction() {
        System.out.println("一年前");
        bFunction();
    }
    void bFunction() {
        System.out.println("请修改爱人的名字");
    }
}

package xuhanshubiao;

public class ProgramerA extends Foo{
    public static void main(String[] args) {
            Foo foo1 = new ProgramerA();
            foo1.aFunction();
            Foo foo2 = new Foo();
            foo2.aFunction();

        }
        void bFunction() {
            System.out.println("小丽");
        

    }
}