java学生成绩管理系统源代码

importjava.awt.*;importjava.awt.event.ActionEvent;importjava.awt.event.ActionListener;importjava.io.BufferedReader;importjava.io.File;importjava.io.FileReader;importjava.io.IOException;importjavax.swing.*;importjavax.swing.event.AncestorEvent;importjavax.swing.event.AncestorListener;publicclassstudentextendsJFrameimplementsActionListener{//标签JLabelj1=newJLabel〔"原表："〕JLabelj2=newJLabel〔"操作显示：JLabelj3=newJLabel〔"学号："〕;JLabelj4=newJLabel〔"姓名："力JLabelj5=newJLabel〔"班级："〕JLabelj6=newJLabel〔"Java:"〕;JLabelj7=newJLabel〔"C++:"〕;JLabelj8=newJLabel〔"C#:"〕;//菜单的设置JMenuBarmenuBar=newJMenuBar〔〕JMenufile=newJMenu〔”文件”〕;JMenuset=newJMenu〔”编辑”〕;〔"新建"〕JMenuhelp=newJMenu〔”帮助〔"新建"〕JMenultemnewltem=newJMenuItem//面板设置JPanel pl = new JPanel〔〕;JPanel p2 = new JPanel〔〕;JPanel p3 = new JPanel〔〕;//文本框设置TextAreatextl=newTextArea〔〕;TextAreatext2=newTextArea〔〕;JTextField text3 = new JTextField〔〕JTextField text4 = new JTextField〔〕JTextField text5 = new JTextField.；JTextField text6 = new JTextField.；JTextField text7 = new JTextField.；JTextField text8 = new JTextField.；JTablejt=newJTable〔〕;〔"信息查询"〕//按钮设置〔"信息查询"〕JButtoncheck=newJButtonJButtoncheckl=newJButton(”科目查询”〕JButtoninput=newJButton〔”插入”〕JButtondelete=newJButton〔”删除"〕JButtonchange=newJButtonJButtonchange=newJButton〔修改”〕JButtonbutton3=newJButton〔”插入”〕JButtonbutton4=newJButton〔”删除"〕JButtonbutton5=newJButton〔修改”〕JButtonbutton6=newJButton("button");JButtonopen=newJButton("翻开”);JButtonclose=newJButtonJButtonclose=newJButton("关闭")FileDialogop;Stringarray口口=newString[50][3];〃构造函数student(){super("学生成绩治理系统");setLayout(null);menuBar.add(file);menuBar.add(set);menuBar.add(help);file.add(newItem);setJMenuBar(menuBar);〃面板1p1.setBounds(10,10,800,530);p1.setBackground(Color.gray);p1.setLayout(null);j1.setBounds(20,0,50,30);j2.setBounds(20,385,100,30);p1.add(j1);p1.add(j2);text1.setBounds(10,30,780,350);text2.setBounds(10,420,780,100);//text1.setEditable(false);p1.add(text1);p1.add(text2);add(p1);〃面板2p2.setLayout(null);p2.setBounds(820,10,150,530);p2.setBackground(Color.green);check.setBounds(23,20,100,50);check1.setBounds(23,80,100,50);button3.setBounds(23,140,100,50);button4.setBounds(23,200,100,50);button5.setBounds(23,260,100,50);button6.setBounds(23,320,100,50);open.setBounds(23,380,100,50);close.setBounds(23,440,100,50);p2.add(check);p2.add(check1);p2.add(button3);p2.add(button4);p2.add(button5);p2.add(button6);p2.add(open);p2.add(close);check.addActionListener(this);check1.addActionListener(this);open.addActionListener(this);add(p2);//面板3p3.setLayout(null);p3.setBounds(10,550,960,100);p3.setBackground(Color.cyan);j3.setBounds(10,5,50,50);j4.setBounds(200,5,80,50);j5.setBounds(390,5,80,50);j6.setBounds(10,50,50,50);j7.setBounds(200,50,80,50);j8.setBounds(390,50,80,50);text3.setBounds(50,15,120,30);text4.setBounds(250,15,120,30);text5.setBounds(450,15,120,30);text6.setBounds(50,60,120,30);text7.setBounds(250,60,120,30);text8.setBounds(450,60,120,30);input.setBounds(650,25,80,50);delete.setBounds(750,25,80,50);change.setBounds(850,25,80,50);p3.add(j3);p3.add(j4);p3.add(j5);p3.add(j6);p3.add(j7);p3.add(j8);p3.add(text3);p3.add(text4);p3.add(text5);p3.add(text6);p3.add(text7);p3.add(text8);p3.add(input);p3.add(delete);p3.add(change);add(p3);setBounds(100,20,1000,720);setBackground(Color.gray);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setVisible(true);}publicstaticvoidmain(String口args){studentstu=newstudent();}publicvoidactionPerformed(ActionEvente){if(e.getSource()==open){Stringstr;String叩strl二newString[1000][8];intcount=0;try(Filefile=newFile("d:/text.txt");FileReaderfile_read=newFileReader(file);BufferedReader br=new BufferedReader(file_read);while((str=br.readLine())!=null)(String口str_chilend=newString[6];str_chilend=str.split("");for(inti=0;i<6;i++)(str1[count][i]=str_chilend[i];}count++;}file_read.close();}catch(IOExceptione1)(e1.printStackTrace();}String叩str2二newString[count][6];for(inti=0;i<count;i++)//复制数组(for(intj=0;j<6;j++)(str2[i][j]=str1[i][j];}}doubleratio1,ratio2;for(inti=0;i<count;i++)〃排序(for(intj=i+1;j<count;j++)(ratio1=Double.parseDouble(str2[i][3]);ratio2=Double.parseDouble(str2[j][3]);}}for(inti=0;i<str2.length;i++)(text1.append("\t");for(intj=0;j<6;j++)(text1.append(str2[i][j]+"\t\t");}text1.append("\n\n");)if(e.getSource()==check){Checkcheck=newCheck();)if(e.getSource()==checkl){Checklcheckl=newCheck1();importjava.awt.Color;importjava.awt.event.ItemEvent;importjava.awt.event.ItemListener;importjavax.swing.*;publicclassCheckextendsJFrame implementsItemListener{TOC\o"1-5"\h\zJLabelj1 =new JLabel(“学号： ");JLabelj2 =new JLabel("姓名： ”)；JLabelj3 =new JLabel(“班级： ");JLabelj4 二newJLabel〔"按科目查询："〕；JTextFieldtext1=newJTextField();JTextFieldtext2=newJTextField();JTextFieldtext3=newJTextField();String[]items={"Java","C++","C#"};JComboBoxjcb=newJComboBox(items);JButtonsure=newJButton(确定“)；JButtonreser=newJButton("取消")；publicCheck(){super("查询");setLayout(null);j1.setBounds(10,10,50,30);j2.setBounds(10,60,50,30);j3.setBounds(10,110,50,30);j4.setBounds(250,10,80,30);add(j1);add(j2);add(j3);add(j4);text1.setBounds(60,10,150,25);text2.setBounds(60,60,150,25);text3.setBounds(60,110,150,25);add(text1);add(text2);add(text3);jcb.setBounds(250,50,80,25);add(jcb);sure.setBounds(80,150,80,30);reser.setBounds(200,150,80,30);add(sure);add(reser);setBounds(200,100,400,250);setVisible(true);}@OverridepublicvoiditemStateChanged(ItemEvente){JComboBoxc_=(JComboBox)e.getSource();if(e.getStateChange()==ItemEvent.SELECTED{}}}importjava.awt.Color;importjava.awt.event.ItemEvent;importjava.awt.event.ItemListener;importjavax.swing.*;publicclassChecklextendsJFrameimplementsItemListener{JLabelj1=newJLabel("条件1:");JLabelj2=newJLabel("条件2:");JLabelj4=newJLabel("按科目查询：”)；String[]items={"Java","C++","C#"};String[]items1={"null","最高分","最低分"};String[]items2={"null","优秀率","不及格率"};JComboBoxjcb=newJComboBox(items);JComboBoxjcb1=newJComboBox(items1);JComboBoxjcb2=newJCom