javadaima
public class Student implements java.io.Serializable {
private String name;
public static void main(String[] args) {
//java.io.Serializable s = new Senior();
//s.name="未央华迪";
//上一句错误
Student s=new Senior();
s.name="未央华迪";
System.out.println(s.name);
}
}
class Senior extends Student {
}
class Junior extends Student {
}
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