java作业——学生信息管理系统 - HelloWorld开发者社区

//20183761 司宇明
ScoreInformation.java
import java.lang.Object;

class ScoreInformation {
   private String stunumber;
   private String name;
   private double mathematicsscore;
   private double englishscore;
   private double networkscore;
   private double databasescore;
   private double softwarescore;

   public ScoreInformation() {
       this.stunumber=stunumber;
       this.name=name;
       this.mathematicsscore=mathematicsscore;
       this.englishscore=englishscore;
       this.networkscore=networkscore;
       this.databasescore=databasescore;
       this.softwarescore=softwarescore;
   }

   //stunumber 的 getter setter
   public void setStunumber(String stunumber) {
       this.stunumber=stunumber;
   }
   public String getStunumber() {
       return stunumber;
   }

   //name 的 getter setter
   public void setName(String name) {
       this.name=name;
   }
   public String getName() {
       return name;
   }

   //mathematicsscore 的 getter setter
   public void setMathematicsscore(double mathematicsscore) {
       this.mathematicsscore=mathematicsscore;
   }
   public double getMathematicsscore() {
       return mathematicsscore;
   }

   //englishscore 的 getter setter
   public void setEnglishscore(double englishscore) {
       this.englishscore=englishscore;
   }
   public double getEnglishscore() {
       return englishscore;
   }

   //networkscore 的 getter setter
   public void setNetworkscore(double networkscore) {
       this.networkscore=networkscore;
   }
   public double getNetworkscore() {
       return networkscore;
   }

   //databasescore 的 getter setter
   public void setDatabasescore(double databasescore) {
       this.databasescore=databasescore;
   }
   public double getDatabasescore() {
       return databasescore;
   }

   //softscore 的 getter setter
   public void setSoftwarescore(double softwarescore) {
       this.softwarescore=softwarescore;
   }
   public double getSoftwarescore() {
       return softwarescore;
   }

}

ScoreManagement.java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Scanner;

public class ScoreManagement {

   ScoreInformation a[]=new ScoreInformation[10];
    int sum = 0;
    void setManager(int n) throws IOException                    //输入学生信息
    {
        BufferedReader reader=new BufferedReader(new InputStreamReader(System.in));
        String str = null;
        for(int i=0;i<n;i++)
        {
            a[i] = new ScoreInformation();                                  //定义对象，开辟空间
            String stunumber=reader.readLine();
            a[i].setStunumber(stunumber);
            String name=reader.readLine();
            a[i].setName(name);
            double mathematicsscore = Double.parseDouble(str);
            a[i].setMathematicsscore(mathematicsscore);
            double englishscore = Double.parseDouble(str);
            a[i].setEnglishscore(englishscore);
            double networkscore = Double.parseDouble(str);
            a[i].setNetworkscore(networkscore);
            double databasescore = Double.parseDouble(str);
            a[i].setDatabasescore(databasescore);
            double softwarescore = Double.parseDouble(str);
            a[i].setSoftwarescore(softwarescore);
        }
        this.sum = n;
    }
    void addStudent(String stunumber,String name,int age,double mathematicsscore,double englishscore,double networkscore,
           double databasescore,double softwarescore) throws IOException
    {
       System.out.println("***********************************************************");
       System.out.println("        石家庄铁道大学软件工程系学生学籍管理系统 2019 版           ");
       System.out.println("                      学生考试成绩录入                                       ");
       System.out.println("***********************************************************");
       System.out.println("请输入学生学号：");
                                                                      //新添加一个学生的信息
        String str="";
        int t=0;
        for(int i=0;i<sum;i++)
            if(a[i].getStunumber().equals(stunumber))
                {

                 t=1;
                }
        if(t==0)
        {
            a[sum]=new ScoreInformation();
            a[sum].setStunumber(stunumber);
            a[sum].setName(name);
           System.out.println("学生学号："+stunumber);
           System.out.println("学生姓名："+name);
           System.out.println("请输入高等数学成绩：");
            a[sum].setMathematicsscore(mathematicsscore);
           System.out.println("高等数学成绩："+mathematicsscore);
           System.out.println("请输入大学英语成绩：");
            a[sum].setEnglishscore(englishscore);
           System.out.println("大学英语成绩："+englishscore);
           System.out.println("请输入计算机网络成绩：");
            a[sum].setNetworkscore(networkscore);
           System.out.println("计算机网络成绩："+networkscore);
           System.out.println("请输入数据库成绩：");
            a[sum].setDatabasescore(databasescore);
           System.out.println("数据库成绩："+databasescore);
            sum+=1;
            System.out.println("添加成功！");
            System.out.println("该学生成绩已录入完毕，是否提交（Y/N）");
            char ch;
            String str1;
            Scanner In=new Scanner(System.in);
            str1=In.next();
            ch=str1.charAt(0);
            if(ch=='Y'||ch=='y')
            {
              this.addStudent(str1, str1, t, softwarescore, softwarescore, softwarescore, softwarescore, softwarescore);
            }
            if(ch=='N'||ch=='n')
            {
              this.menu();
            }

        }
        else
            System.out.println("学号已存在");
       System.out.println("***********************************************************");
    }
    void updateStudent(String stunumber,String name,int age,double mathematicsscore,double englishscore,double networkscore,
           double databasescore,double softwarescore)
    {
       //根据学号修改学生信息
       System.out.println("***********************************************************");
       System.out.println("        石家庄铁道大学软件工程系学生学籍管理系统 2019 版           ");
       System.out.println("                     学生考试成绩修改界面                                  ");
       System.out.println("***********************************************************");
       System.out.println("请输入学生学号： ");

       int i=0;
            if(a[i].getStunumber().equals(stunumber))
            {
               System.out.println("学生学号： ");
               System.out.println("学生姓名： ");
               System.out.println("1、高等数学成绩： "+a[i].getMathematicsscore());
               System.out.println("2、大学英语成绩： "+a[i].getEnglishscore());
               System.out.println("3、计算机网络成绩： "+a[i].getNetworkscore());
               System.out.println("4、数据库成绩： "+a[i].getDatabasescore());
               System.out.println("5、软件工程成绩： "+a[i].getSoftwarescore());
            }
           System.out.println("请输入修改后成绩 ");
            b=in.nextInt();
            switch(b)
            {
              case 1:a[i].setMathematicsscore(mathematicsscore);break;
              case 2:a[i].setEnglishscore(englishscore);break;
              case 3:a[i].setNetworkscore(networkscore);break;
              case 4:a[i].setDatabasescore(databasescore);break;
              case 5:a[i].setSoftwarescore(softwarescore);break;
            }
            System.out.println("该学生成绩已修改完毕，是否提交（Y/N）");
            char ch2;
            String str2;
            Scanner In=new Scanner(System.in);
            str2=In.next();
            ch2=str2.charAt(0);
            if(ch2=='Y'||ch2=='y')
            {
              this.addStudent();
            }
            if(ch2=='N'||ch2=='n')
            {
              this.menu();
            }
        System.out.println("***********************************************************");
    }

   public void menu() {
       int a;
       Scanner in = new Scanner(System.in);
       System.out.println("***********************************************************");
        System.out.println("                   石家庄铁道大学软件工程系                               ");
        System.out.println("                   学生学籍管理系统 2019 版                                ");
        System.out.println("***********************************************************");
        System.out.println("                   1、学生考试成绩录入                                      ");
        System.out.println("                   2、学生考试成绩修改                                      ");
        System.out.println("                   3、计算学生成绩绩点                                      ");
        System.out.println("                   4、退出学籍管理系统                                      ");
        System.out.println("***********************************************************");
        System.out.println("                                                           ");
        System.out.println("请选择(1~4):");
        a=in.nextInt();
        while(a<1||a>4)
        {
          System.out.print("输入超出范围，请重新输入:");
          a=in.nextInt();
        }
        switch(a)
        {
          case 1:this.addStudent();break;
          case 2:this.updateStudent();break;
          case 3:this.cal();break;
          case 0:System.exit(0);break;
        }
      }

}

Main.java

import java.util.Scanner;

public class Main {
      public static void main(String[] args)
      {
          ScoreInformation stu=new ScoreInformation();
        for(int i=0;i<2;i++)
        {
          a[i]=new ScoreInformation();
        }
        stu.menu();
      }
}

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