C++:

class Basic
{
public:
    void test(string i){
        cout << "basic str" <<endl;
    }
    void test(int i){
        cout << "basic" <<endl;
    }

    
};

class Senior : public Basic
{

public:
    void test(long i){
        cout << "senior 1" <<endl;
    }


};

int main(int argc, const char * argv[]) {
    // insert code here...
    std::cout << "Hello, World!\n";
    
    Senior ps;
    ps.test(23);
    string str("c");
    ps.test(str);
    return 0;
}

//输出结果
编译错误，提示No viable conversion from ‘string‘ (aka ‘basic_string<char, char_traits<char>, allocator<char> >‘) to ‘long‘

修改标红的代码--> ps.Basic::test(str) 则可以编译成功，并输出预期的结果

senior 1

basic str

public class Basic{
    public int testException(int val) {
        try{
            int j = 3/1;
            return j;
        }
        catch(Exception e){
            return -1;
        }
    }
    public String testException(String val) {
        try{
            return new String("ac");
        }
        catch(Exception e){
            return new String("bc");
        }
    }

};

public class Senior extends Basic{
    public Long testException(Long val) {
        try{
            return  (long) 9;
        }
        catch(Exception e){
            return (long) 7;
        }
    }
}

public static void main(String args[]) throws InstantiationException, IllegalAccessException, SecurityException, Exception{
    // 向控制台输出信息
    
    Senior ba = new Senior();
    System.out.println("basic:" + ba.testException(2));
    System.out.println("basic:" + ba.testException("123"));
  }
}

输出结果

basic:3

basic:ac