确实挺复杂的,做了2个小时!
而且给的信息并不是很足,我自己添加了一个保存分数成绩的列表
希望楼主满意!
//MainTest .java
import java.util.Random;
public class MainTest {
public MainTest(){
String departname="计算机信息学院";
String className="软件工程1001";
//初始化班级
student_class aStuClass=new student_class(departname,className);
//10个学生的名字
String[] stuNames={"张山","李氏","网无","朝留","谈吧","赵平久","杨诗意","刘氏二","宋世山","向强"};
//添加10个学生
for(int i=0;i aStuClass.inputstudent(i, stuNames[i]); } //查找学号为5的学生 student idis5=aStuClass.searchstudent(5); if(idis5==null){ System.out.println("没有学号为5的学生"); }else{ //把查到的这个学生信息输出来 System.out.println("学号为5的学生:"); idis5.showStudent(); } //查找姓名为宋世山的学生 student nameSearch=aStuClass.searchstudent("宋世山"); if(nameSearch==null){ System.out.println("没有叫宋世山的学生"); }else{ //把查到的这个学生信息输出来 System.out.println("\n名字叫宋世山的学生:"); nameSearch.showStudent(); } //全班学生的名单 System.out.println("\n"+aStuClass.getTeam()+"的学生名单:"); aStuClass.output_student(); //成绩录入 语文 String yuwen="语文"; Random ram=new Random(); for(int i=0;i<5;i++){ aStuClass.input_score(i, yuwen, 40+ram.nextInt(60)); } //英语成绩录入 String english="英语"; for(int i=0;i<10;i++){ aStuClass.input_score(i, english, 50+ram.nextInt(50)); } //马克思成绩录入 String make="马克思"; for(int i=0;i<10;i++){ aStuClass.input_score(i, make, 60+ram.nextInt(40)); } //显示几门课的成绩 String[] subject={"马克思","英语","语文"}; aStuClass.display_scores(subject); } public static void main(String args[]){ new MainTest(); } } //student_class.java import java.util.ArrayList; import java.util.Collection; import java.util.Iterator; public class student_class { private String depart; private String team; private Collection //新增加的分数成绩属性 private ArrayList public student_class(){} public student_class(String pDepart,String pTeam,Collection this.depart=pDepart; this.member=pMember; this.team=pTeam; score=new ArrayList } public student_class(String pDepart,String pTeam){ this.depart=pDepart; this.team=pTeam; this.member=new ArrayList score=new ArrayList } //输入学生 public void inputstudent(int i,String n){ student aStudent=new student(i,n); member.add(aStudent); } //按照ID检索学生 public student searchstudent(int i){ student result=null; Iterator while(it.hasNext()) { student aStu = (student)it.next(); // 得到下一个元素 if(aStu.getId() == i){ result=aStu; break; } } return result; } //按照名字检索学生 public student searchstudent(String name){ if(name==null){ return null; } student result=null; Iterator while(it.hasNext()) { student aStu = (student)it.next(); // 得到下一个元素 if(aStu.getName().equals(name)){ result=aStu; break; } } return result; } //输出全班学生 public void output_student(){ Iterator while(it.hasNext()) { student aStu = (student)it.next(); // 得到下一个元素 System.out.println("学号:"+aStu.getId()+" 姓名:"+aStu.getName()); } } public void input_score(int id,String subject,int score){ SubScore aScore=new SubScore(id,subject,score); this.score.add(aScore); } public void display_scores(String[] subject){ for(int i=0;i displayScore(subject[i]); } } protected void displayScore(String subject){ //输出该课程的所有成绩 System.out.println("\n"+subject+"成绩一览:"); for(int j=0;j SubScore aScore=score.get(j); if(aScore.getSubject().equals(subject)){ aScore.showScore(); } } } public String getDepart() { return depart; } public void setDepart(String depart) { this.depart = depart; } public String getTeam() { return team; } public void setTeam(String team) { this.team = team; } public Collection return member; } public void setMember(Collection this.member = member; } } class student{ private int id; private String name; public student(){ } public student(int id,String name){ this.id=id; this.name=name; } public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public void showStudent(){ System.out.println("学号:"+id+" 姓名:"+name); } } class SubScore{ private int id; private String subject; private int score; public SubScore(){ } public SubScore(int id,String subject,int score){ this.id=id; this.subject=subject; this.score=score; } public int getId() { return id; } public void setId(int id) { this.id = id; } public String getSubject() { return subject; } public void setSubject(String subject) { this.subject = subject; } public int getScore() { return score; } public void setScore(int score) { this.score = score; } public void showScore(){ System.out.println(" 学号:"+id+" 分数:"+score); } } ~~~~(>_<)~~~~ ,花了我两个小时啊!希望采纳哟
你是为了做一个班级成绩系统,还是只是为了练习一下代码?随便写写?
student 连name 属性都没有,还检索啥啊