java学生成绩管理系统课程设计报告.docx

1、java学生成绩管理系统课程设计报告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

2、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： 3 系统详细设计创建Student类，设置变量及对应方法Student.java代码：package keshe;import java.io.Serializable;public class Student implements Serializable private String name; private int num; private int yuwen; private int shuxue; private int java; private int sum=0; public Stud

3、ent() public Student(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; public String getName() return name; public void setName(String name) this.name = name; public int getNum() return num; p

4、ublic void setNum(int num) this.num = num; public int getYuwen() return yuwen; public void setYuwen(int yuwen) this.yuwen = yuwen; public int getShuxue() return shuxue; public void setShuxue(int shuxue) this.shuxue = shuxue; public int getJava() return java; public void setJava(int java) this.java =

5、 java; public int getSum() return sum; public void setSum(int sum) this.sum = sum; public String toString() return Student 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）供其对象调用。St

6、uC.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;import

7、java.util.ArrayList;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(i)

8、.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() fo

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

10、race(); 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

11、 File(e:/mydata.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); 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.FileNotFo

12、undException;import java.io.IOException;import javax.swing.*;public class Login extends JFrame private 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 GridLayo

13、ut(3,1);/三行一列布局 Label 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 1 p1.add(f1); p

14、2.add(l2); p2.add(f2); p3.add(b1); p3.add(b2); 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 ActionListener public void actionPerformed(ActionEvent e) if(f1.getText().equa

15、ls(yazhou)&(f2.getText().equals(123456) scs.read();/初始化，从文件读入信息 XueSheng frame1 = 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 ActionListener public void actionPerformed(ActionEvent

16、e) f1.setText(); f2.setText(); f1.requestFocus(); class Close implements ActionListener public 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); log.setBounds(200,

17、 200, 300, 300); log.setBackground(Color.blue); log.setVisible(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,Fon

18、t.TRUETYPE_FONT,13); JPanel panel2 = new JPanel(); JPanel panel1 = 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 JBut

19、ton(增加); panel2.add(zj); sc = new JButton(删除); panel2.add(sc); tc = new 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.addAct

20、ionListener(this); tc.addActionListener(this); tj.addActionListener(this); this.setVisible(true); public void actionPerformed(ActionEvent e) 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) XiuGa

21、i x=new XiuGai(); if(e.getSource()=tc) shutDown(); if(e.getSource()=tj) Tongji t=new Tongji(); 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 Act

22、ionListener private JTextField STNOText, SNAMEText, MAText, CHIText, JAVAText; private 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)

23、; JPanel low = new JPanel(new FlowLayout(); JLabel label1 = new JLabel(添加学生信息, SwingConstants.CENTER); label1.setFont(new Font(TRUE, Font.TRUETYPE_FONT, 20); c2.add(label1); STNOText = new JTextField(30);/30列文本框 SNAMEText = new JTextField(30); CHIText = new JTextField(30); MAText = new JTextField(30

24、); JAVAText = new JTextField(30); center.add(new JLabel(学号, SwingConstants.CENTER);/添加标签学号写在标签中间 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, Swing

25、Constants.CENTER); center.add(MAText); center.add(new JLabel(java, SwingConstants.CENTER); center.add(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.addActionListen

26、er(this); b3.addActionListener(this); this.setBounds(200, 200, 600, 400); this.setVisible(true); this.setTitle(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();

27、if (e.getSource() = b2) clearForm(); if (e.getSource() = b3) this.dispose(); private void addFI() throws FileNotFoundException, 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, 请添加完全信息); else Student a=new Student(