java.student类

java.student类

class Student { private String id;//表示学号 private String name;//表示姓名 private char sex;//表示性别 private int age;//表示年龄 private double computer_score;//表示计算机课程的成绩 private double english_score;//表示英语课的成绩 private double maths_score;//表示数学课的成绩 private double total_score;// 表示总成绩 private double ave_score; //表示平均成绩 public Student(String id, String name){ this.id = id; this.name = name;} public Student(String id, String name, char sex, int age){ this(id, name); this.sex = sex; this.age = age;} public String getId(){ return id;}//获得当前对象的学号， public double getComputer_score(){ return computer_score;}//获得当前对象的计算机课程成绩, public double getMaths_score(){ return maths_score;}//获得当前对象的数学课程成绩, public double getEnglish_score(){ return english_score;}//获得当前对象的英语课程成绩, public void setId(String id){ this.id=id;}// 设置当前对象的id值, public void setComputer_score(double computer_score){ this.computer_score=computer_score;}//设置当前对象的Computer_score值, public void setEnglish_score(double english_score){ this.english_score=english_score;}//设置当前对象的English_score值, public void setMaths_score(double maths_score){ this.maths_score=maths_score;}//设置当前对象的Maths_score值, public double getTotalScore(){ return computer_score+maths_score+english_score;}// 计算Computer_score, Maths_score 和English_score 三门课的总成绩。 public double getAveScore(){ return getTotalScore()/3;}// 计算Computer_score, Maths_score 和English_score 三门课的平均成绩。}class Undergraduate extends Student{ private String classID; public Undergraduate(String id, String name, char sex, int age,String classID){ super(id,name,sex,age); this.classID=classID; } public String getClassID(){ return classID; } public void setClassID(String classID){ this.classID=classID; }}class Graduate extends Student{ private String tutor; public Graduate(String id, String name, char sex, int age,String tutor){ super(id,name,sex,age); this.tutor=tutor; } public double getTotalScore() { return getComputer_score()+getEnglish_score(); } public double getAveScore(){ return getTotalScore()/2; }}public class Test { public static void main(String[] args) { Undergraduate ug=new Undergraduate("0001", "张三", '男',19, "2083"); ug.setComputer_score(65); ug.setEnglish_score(75); ug.setMaths_score(85); Graduate g=new Graduate("1001","李四",'女',24,"王五"); g.setComputer_score(65); g.setEnglish_score(75); g.setMaths_score(85); Student s[]={ug,g}; for(int i=0;i