public abstract class Person {
protected String name;
public Person(String name){
this.name = name;
}
public abstract void showinfo();
}
class Student extends Person{
private int grade;
private String specialty;
public Student(String name,int grade,String specialty){
super(name);
this.grade = grade;
this.specialty = specialty;
}
public void showinfo() {
System.out.println("姓名:"+ name+" "+"年纪:"+grade+" "+"专业:"+specialty);
}
}
public class StTest {
public static void main(String[] args) {
Student s = new Student("小明",12,"java");
s.showinfo();
}
}
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