【单选题】![](https://cos-cdn.shuashuati.com/shuashuati-wap/asset/rightlogo.png)
已知: public class Pet{ private String name; public Pet(){ System.out.print(1); } public Pet(String name){ System.out.print(2); } } public class Dog extends Pet{ public Dog(String name){ System.out.print(3); } } 执行new Dog(“棕熊”);后,程序输出是( )
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参考答案:
![](https://cos-cdn.shuashuati.com/shuashuati-wap/asset/rightlogo.png)
参考解析:
![](https://cos-cdn.shuashuati.com/shuashuati-wap/asset/rightlogo.png)
举一反三
![](https://cos-cdn.shuashuati.com/shuashuati-wap/asset/rightlogo.png)