lass Person{ public String name; public char sex; public int age; Person(String name,char sex,int age){ this.name=name; this.sex=sex; this.age=age; } } class Student extends Person{ public String classno; public String sno; public void updateAge(int age){ this.age=age; } public String toString(){ System.out.println(this.name+" "+this.sex+" "+this.age+" "+this.classno+" "+this.sno); return this.name+" "+this.sex+" "+this.age+" "+this.classno+" "+this.sno; } Student(String name,char sex,int age,String classno,String sno){ super(name,sex,age); this.classno=classno; this.sno=sno; } } public class TestStudentPerson{ public static void main(String args[]){ Student s1=new Student("jeck",'n',20,"12233344","2") 注：“实验记录及个人小结”部分不够可另附页或在背面续写
