java学生成绩管理系统课程设计报告.doc

1、页眉目录1 设计目的及内容要求12 系统总体设计13 系统详细设计24 运行结果及分析17致谢22参考文献22页脚页眉简单学生成绩管理系统的设计与实现1 设计目的及内容要求1、 设计目的：巩固和加深学生对高级语言程序设计课程的基本知识的理解和掌握，掌握java 语言编程和程序调试的基本技能，利用 java 语言进行基本的软件设计，提高运用java 语言解决实际问题的能力。2、 内容要求实现学生成绩的管理（增、删、改、查询、持久化、成绩排序、成绩统计等功能），在文件中增加、删除、学生信息，根据学号查询、修改学生信息，统计功能求每个人的总分并按从高到低排序，通过这些操作对文件中的信息保存。2 系统

2、总体设计成功登陆系统以后， 出现成绩管理界面， 系统初始化， 可对学生成绩进行增加、 删除、查询、修改、统计，进入相应界面进行成绩管理，退出系统自动保存本次操作内容，保存信息。简易流程图：登陆成绩管理界面增加删除查询修改统计退出页脚页眉3 系统详细设计创建 Student类，设置变量及对应方法Student.java代码：packagekeshe;importjava.io.Serializable;publicclassStudentimplementsSerializableprivateStringname ;privateintnum ;privateintyuwen;privatei

3、ntshuxue;privateintjava;privateintsum =0;publicStudent()publicStudent(String name,int num, int yuwen, int shuxue,int java) super();this .name= name;this .num= num;this .yuwen= yuwen;this .shuxue= shuxue;this .java= java;publicString getName() returnname;publicvoidsetName(String name) this .name= nam

4、e;publicint getNum() returnnum ;publicvoidsetNum(int num) this .num= num;publicint getYuwen() returnyuwen;publicvoidsetYuwen(int yuwen) 页脚页眉this .yuwen= yuwen;publicint getShuxue() returnshuxue ;publicvoidsetShuxue(int shuxue) this .shuxue= shuxue;publicint getJava() returnjava ;publicvoidsetJava(in

5、t java) this .java= java;publicint getSum() returnsum ;publicvoidsetSum( int sum) this .sum = sum;publicString toString() returnStudent name=+ name+ , num=+ num+ , yuwen=+ yuwen+ , shuxue= + shuxue + , java= + java + , sum= + sum + ;Student管理类 StuC ，创建对应方法，实现对Student对象的操作（增、删、改、查询、持久化、成绩排序、成绩统计等功能）供

6、其对象调用。StuC.java代码package keshe;import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.FileReader;import java.io.IOException;import java.io.ObjectInputStream;import java.io.ObjectOutputStream

7、;import java.util.ArrayList;页脚页眉public class StuC ArrayList al=new ArrayList();File file = new File(e:/mydata.dat);/ 添加public void adds(Student s)al.add(s);/ 删除public void del(int n)for(int i=0;ial.size();i+)if(al.get(i).getNum()=n)al.remove(i);/ 求总分public void sum()for(int i=0;ial.size();i+)al.get(

8、i).setSum(al.get(i).getJava()+al.get(i).getShuxue()+al.get(i).getYuwen();/ 排序public void sort() for (int i = 0; i al.size(); i+) for (int j = 0; j al.size()-1-i; j+) if (al.get(j).getSum() al.get(j+1).getSum() Object o=al.get(j);al.set(j, al.get(j+1);al.set(j+1, (Student) o);public void paint()for(i

9、nt i=0;ial.size();i+)System.out.println(al.get(i);public String toString() return StuC al= + al + ;/ 输出流public void stor()页脚页眉ObjectOutputStream out = null;try out = new ObjectOutputStream(new FileOutputStream(file);out.writeObject(al);out.close(); catch (FileNotFoundException e) e.printStackTrace()

10、; catch (IOException e) e.printStackTrace();/ 输入流public void read()ObjectInputStream in = null;try in = new ObjectInputStream(new FileInputStream(file);try al = (ArrayList)in.readObject(); catch (ClassNotFoundException e) al=null;in.close(); catch (FileNotFoundException e) File file = new File(e:/my

11、data.dat); catch (IOException e) e.printStackTrace();/ 查找public Student find(int n)for(int i=0;ial.size();i+)if(al.get(i).getNum()=n)return al.get(i);页脚页眉return null;登陆界面及成绩管理的所有界面，同过创建StuC 的对象，调用其方法实现成绩管理代码：package keshe;import java.awt.*;import java.awt.event.*;import java.io.FileNotFoundException

12、;import java.io.IOException;import javax.swing.*;public class Login extends JFrameprivate TextField f1;private TextField f2;private JButton b1;private JButton b2;private JButton b3;StuC scs=new StuC();/ 登陆界面public Login()Container cp=getContentPane();/容器cp.setLayout(new GridLayout(3,1);/三行一列布局Label

13、l1=new Label(用户名 );Label l2=new Label(密码 );Panel p1=new Panel();Panel p2=new Panel();Panel p3=new Panel();f1=new TextField(10);f2=new TextField(10);f2.setEchoChar(*);/回显字符为 *b1=new JButton(登录 );b2=new JButton(重置 );b3=new JButton(退出 );p1.add(l1);/第一行添加label 1p1.add(f1);p2.add(l2);p2.add(f2);p3.add(b1

14、);p3.add(b2);页脚页眉p3.add(b3);cp.add(p1);cp.add(p2);cp.add(p3);b1.addActionListener(new Enter();b2.addActionListener(new ReWrite();b3.addActionListener(new Close();class Enter implements ActionListenerpublic void actionPerformed(ActionEvent e)if(f1.getText().equals(yazhou)&(f2.getText().equals(123456)

15、scs.read();/初始化，从文件读入信息XueShengframe1 = new XueSheng();frame1.setBounds(200, 200, 300, 300);frame1.setVisible(true);else JOptionPane.showMessageDialog(null, 用户名或密码错误，请重新登录！);class ReWrite implements ActionListenerpublic void actionPerformed(ActionEvent e)f1.setText();f2.setText();f1.requestFocus();c

16、lass Close implements ActionListenerpublic void actionPerformed(ActionEvent e)JButton bt=(JButton)e.getSource();if(bt=b3)System.exit(0);/ 主函数 程序开始public static void main(String args) Login log=new Login();log.setTitle(系统登录 );页脚页眉log.setBounds(200, 200, 300, 300);log.setBackground(Color.blue);log.set

17、Visible(true);/ 信息管理界面内部类 进行初始化和保存class XueSheng extends JFrame implements ActionListener private JButton cx, zj, tc, sc,xg,tj;public XueSheng()Container c = this.getContentPane();c.setLayout(new GridLayout(3, 1);c.setFont(new Font(true,Font.TRUETYPE_FONT,13);JPanel panel2 = new JPanel();JPanel pane

18、l1 = new JPanel();JLabel label1 = new JLabel(欢迎进入成绩管理,SwingConstants.CENTER);label1.setFont(new Font(true,Font.TRUETYPE_FONT,13);label1.setForeground(Color.blue);c.add(label1);/ 添加按钮cx = new JButton(查询 );panel2.add(cx);zj = new JButton(增加 );panel2.add(zj);sc = new JButton(删除 );panel2.add(sc);tc = ne

19、w JButton(退出 );panel2.add(tc);xg = new JButton(修改 );panel1.add(xg);tj = new JButton(统计 );panel1.add(tj);c.add(panel2);c.add(panel1);cx.addActionListener(this);zj.addActionListener(this);sc.addActionListener(this);xg.addActionListener(this);tc.addActionListener(this);tj.addActionListener(this);this.s

20、etVisible(true);public void actionPerformed(ActionEvent e)页脚页眉if (e.getSource() = cx) Find f = new Find();if(e.getSource()=zj)AddFI f = new AddFI();if(e.getSource()=sc)Delet d = new Delet();if(e.getSource()=xg)XiuGai x=new XiuGai();if(e.getSource()=tc)shutDown();if(e.getSource()=tj)Tongji t=new Tong

21、ji();private void shutDown()scs.stor();JOptionPane.showMessageDialog(null, 信息已保存 ); this.dispose();/ 增加信息界面内部类，捕获文本框中信息创建Student 对象，添加到 Arraylist 中，如果已存在该学号 / 给出提示信息，并重新添加。class AddFI extends JFrame implements ActionListener private JTextField STNOText, SNAMEText, MAText, CHIText, JAVAText; private

22、JButton b1, b2, b3;private String STNO, SNAME,MAT, CHI, JAVA;public AddFI() super( 添加学生信息 );Container c2 = this.getContentPane();c2.setLayout(new GridLayout(3, 1);JPanel center = new JPanel(new GridLayout(5, 2);JPanel low = new JPanel(new FlowLayout();JLabel label1 = new JLabel(添加学生信息 , SwingConstan

23、ts.CENTER);label1.setFont(new Font(TRUE, Font.TRUETYPE_FONT, 20); c2.add(label1);STNOText = new JTextField(30);/30列文本框页脚页眉SNAMEText = new JTextField(30);CHIText = new JTextField(30);MAText = new JTextField(30);JAVAText = new JTextField(30);center.add(new JLabel(学号 , SwingConstants.CENTER);/添加标签学号写在标

24、签中间center.add(STNOText);/添加文本框center.add(new JLabel(姓名 , SwingConstants.CENTER);center.add(SNAMEText);center.add(new JLabel(语文 , SwingConstants.CENTER);center.add(CHIText);center.add(new JLabel(数学 , SwingConstants.CENTER);center.add(MAText);center.add(new JLabel(java, SwingConstants.CENTER);center.a

25、dd(JAVAText);c2.add(center);b1 = new JButton(添加 );b2 = new JButton(清除 );b3 = new JButton(退出 );low.add(b1);low.add(b2);low.add(b3);c2.add(low);/ 添加监听b1.addActionListener(this);b2.addActionListener(this);b3.addActionListener(this);this.setBounds(200, 200, 600, 400);this.setVisible(true);this.setTitle(

26、 添加学生信息 );public void actionPerformed(ActionEvent e) if (e.getSource() = b1) try addFI(); catch (FileNotFoundException e1) e1.printStackTrace(); catch (IOException e1) e1.printStackTrace();if (e.getSource() = b2) clearForm();页脚页眉if (e.getSource() = b3) this.dispose();private void addFI() throws File

27、NotFoundException, IOException STNO = STNOText.getText();SNAME = SNAMEText.getText();CHI = CHIText.getText();MAT = MAText.getText();JAVA = JAVAText.getText();if (STNO.length() = 0 | SNAME.length() = 0 | MAT.length() = 0| JAVA.length() = 0 | CHI.length() = 0)JOptionPane.showMessageDialog(this, 请添加完全信

28、息 );else Student a=new Student(SNAME,Integer.parseInt(STNO),Integer.parseInt(CHI),Integer.parseInt(MAT),Integer.parseInt(JAVA); int b=0;for(int i=0;iscs.al.size();i+)if(scs.al.get(i).getNum()=Integer.parseInt(STNO)b=1;if(b=0)scs.adds(a);JOptionPane.showMessageDialog(this, 添加成功 );elseJOptionPane.show

29、MessageDialog(this, 已存在 );private void clearForm() STNOText.setText();SNAMEText.setText();MAText.setText();CHIText.setText();JAVAText.setText();/ 查询信息界面内部类 ,根据输入的学号，在 arraylist 中查找对应学号的学生信息，分别输出页脚页眉class Find extends JFrame implements ActionListener private JTextField STNOText, SNAMEText, MAText, CH

30、IText, JAVAText; private String STNO;private JButton b1, b2;public Find() Container c1 = this.getContentPane();c1.setLayout(new GridLayout(4, 1);JLabel label1 = new JLabel(查询学生信息 , SwingConstants.CENTER);JLabel label0 = new JLabel( 请输入你的学号 ,SwingConstants.CENTER); JPanel pp = new JPanel(new GridLayo

31、ut(2, 1);pp.add(label1);pp.add(label0);c1.add(pp);JPanel p1 = new JPanel();STNOText = new JTextField(10);p1.add(STNOText);c1.add(p1);JPanel p2 = new JPanel();b1 = new JButton(查询 );b2 = new JButton(退出 );b1.addActionListener(this);b2.addActionListener(this);p2.add(b1);p2.add(b2);c1.add(p2);JPanel cent

32、er = new JPanel(new GridLayout(4, 2);SNAMEText = new JTextField(30);CHIText = new JTextField(30);MAText = new JTextField(30);JAVAText = new JTextField(30);center.add(new JLabel( 姓名 , SwingConstants.CENTER); center.add(SNAMEText);center.add(new JLabel( 语文 , SwingConstants.CENTER); center.add(CHIText)

33、;center.add(new JLabel( 数学 , SwingConstants.CENTER); center.add(MAText);center.add(new JLabel(java, SwingConstants.CENTER);center.add(JAVAText);c1.add(center);this.setVisible(true);this.setBounds(200, 200, 400, 300);public void actionPerformed(ActionEvent e)页脚页眉if (e.getSource() = b1) STNO = STNOTex

34、t.getText();int k=0;for(int i=0;iscs.al.size();i+)if(Integer.parseInt(STNO)=scs.al.get(i).getNum()SNAMEText.setText(scs.al.get(i).getName();MAText.setText(String.valueOf(scs.al.get(i).getShuxue();CHIText.setText(String.valueOf(scs.al.get(i).getYuwen();JAVAText.setText(String.valueOf(scs.al.get(i).ge

35、tJava();k=1;if(k=0)JOptionPane.showMessageDialog(this, 查无此人 );if (e.getSource() = b2) this.dispose();/ 删除信息界面，通过输入的学号进行查找并在 arraylist 中移除class Delet extends JFrame implements ActionListenerprivate JButton yes;private JButton cancle;private JTextField text1;private String STNO;public Delet()Container

36、 c3 = this.getContentPane();c3.setLayout(new GridLayout(3, 1);c3.setFont(new Font(true,Font.TRUETYPE_FONT,13);JPanel p1 = new JPanel();JPanel p2 = new JPanel();JLabel label1 = new JLabel( 删除学生信息 ,SwingConstants.CENTER); label1.setFont(new Font(true,Font.TRUETYPE_FONT,13); label1.setForeground(Color.

37、blue);c3.add(label1);JLabel label2 = new JLabel(请输入学号 );text1 = new JTextField(10);p1.add(label2);页脚页眉p1.add(text1);c3.add(p1);yes = new JButton(确定 );cancle = new JButton(退出 );p2.add(yes);p2.add(cancle);c3.add(p2);yes.addActionListener(this);cancle.addActionListener(this);this.setTitle( 删除学生信息 );thi

38、s.setBounds(200,200,400,300);this.setVisible(true);public void actionPerformed(ActionEvent e)if(e.getSource()=yes)delt();if(e.getSource()=cancle)this.dispose();private void delt()STNO= text1.getText();scs.del(Integer.parseInt(STNO);JOptionPane.showMessageDialog(this, 删除成功 );/ 统计界面，对 arraylist 中所有对象进

39、行求总分，并按总分从达到小排序class Tongji extends JFrame implements ActionListenerprivate JButton b1,b2;JTextArea t;public Tongji()Container c1 = this.getContentPane();c1.setLayout(new GridLayout(3, 1);JPanel p1 =new JPanel();JLabel label1 = new JLabel( 统计信息 , SwingConstants.CENTER); p1.add(label1);c1.add(p1);t=n

40、ew JTextArea();JScrollPane scroll=new JScrollPane(t);c1.add(scroll);JPanel p3=new JPanel();b1 = new JButton(统计 );页脚页眉b2 = new JButton(退出 );p3.add(b1);p3.add(b2);c1.add(p3);this.setBounds(200,200,400,300);this.setVisible(true);b1.addActionListener(this);b2.addActionListener(this);public void actionPe

41、rformed(ActionEvent e) if (e.getSource() = b1)scs.sum();scs.sort();String s=new String100;String s1= 总分从大到小 n 姓名 学号 数学 语文 java 总分 ; for(int i=0;iscs.al.size();i+)si=scs.al.get(i).getName()+scs.al.get(i).getNum()+scs.al.get(i).getShuxue()+scs.al.get(i).getYuwen()+scs.al.get(i).getJava()+scs.al.get(i)

42、.getSum();for(int i=0;iscs.al.size();i+)s1=s1+n+si;t.append(s1);if (e.getSource() = b2)this.dispose();/ 修改信息界面，捕获输入的学号，查找该生信息，直接在文本框中修改，类似添加功能冲新添加该生信息class XiuGai extends JFrame implements ActionListenerprivate JTextField STNOText, SNAMEText, MAText, CHIText, JAVAText; private JButton b1,b2,b3;publi

43、c XiuGai()Container c4 = this.getContentPane();c4.setLayout(new GridLayout(4, 1);c4.setFont(new Font(true,Font.TRUETYPE_FONT,13);页脚页眉JPanel up = new JPanel();JPanel center1 = new JPanel();JPanel center2 = new JPanel(new GridLayout(4, 2);JPanel low = new JPanel();JLabel label11 = new JLabel(需要修改的学号);

44、STNOText=new JTextField(15);up.add(label11);up.add(STNOText);c4.add(up);b1=new JButton(查找 );center1.add(b1);c4.add(center1);JLabel label21 = new JLabel(姓名 , SwingConstants.CENTER);JLabel label22 = new JLabel(数学 , SwingConstants.CENTER);JLabel label23 = new JLabel(语文 , SwingConstants.CENTER);JLabel label24 = new JLabel(java, SwingConstants.CENTER); SNAMEText=new JTextField(22);MAText=new JTextField(22);CHIText=new JTextField(22);JAVAText=new JTextField(22);center2.add(label21);center2.ad