java 学生成绩管理系统源代码.docx

java 学生成绩管理系统源代码import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.BufferedReader; import java.io.File; import java.io.FileReader; import java.io.IOException; import javax.swing.*; import javax.swing.event.AncestorEvent; import javax.swing.event.AncestorListener; public class student extends JFrame implements ActionListener /标签 JLabel j1 = new JLabel("原表："); JLabel j2 = new JLabel("操作显示："); JLabel j3 = new JLabel("学号: "); JLabel j4 = new JLabel("姓名： "); JLabel j5 = new JLabel("班级： "); JLabel j6 = new JLabel("Java: "); JLabel j7 = new JLabel("C+： "); JLabel j8 = new JLabel("C#： "); /菜单的设置 JMenuBar menuBar = new JMenuBar; JMenu file = new JMenu("文件"); JMenu set = new JMenu("编辑"); JMenu help = new JMenu("帮助"); JMenuItem newItem = new JMenuItem("新建"); /面板设置 JPanel p1 = new JPanel; JPanel p2 = new JPanel; JPanel p3 = new JPanel; /文本框设置 TextArea text1 = new TextArea; TextArea text2 = new TextArea; JTextField text3 = new JTextField; JTextField text4 = new JTextField; JTextField text5 = new JTextField; JTextField text6 = new JTextField; JTextField text7 = new JTextField; JTextField text8 = new JTextField; JTable jt = new JTable; /按钮设置 JButton check = new JButton("信息查询"); JButton check1 = new JButton("科目查询"); JButton input = new JButton("插入"); JButton delete = new JButton("删除"); JButton change = new JButton("修改"); JButton button3 = new JButton("插入"); JButton button4 = new JButton("删除"); JButton button5 = new JButton("修改"); JButton button6 = new JButton("button"); JButton open = new JButton("打开"); JButton close = new JButton("关闭"); FileDialog op; String array = new String503; /构造函数 student super("学生成绩管理系统"); setLayout(null); menuBar.add(file); menuBar.add(set); menuBar.add(help); file.add(newItem); setJMenuBar(menuBar); /面板1 p1.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2 p2.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3 p3.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); public static void main(String args) student stu = new student; public void actionPerformed(ActionEvent e) if(e.getSource = open) String str; String str1=new String10008; int count=0; try File file=new File("d:/text.txt"); FileReader file_read=new FileReader(file); BufferedReader br=new BufferedReader(file_read); while(str=br.readLine)!=null) String str_chilend=new String6; str_chilend=str.split(" "); for(int i=0;i<6;i+) str1counti=str_chilendi; count+; file_read.close; catch(IOException e1) e1.printStackTrace; String str2=new Stringcount6; for(int i=0;i<count;i+) /复制数组 for(int j=0;j<6;j+) str2ij=str1ij; double ratio1,ratio2; for(int i=0;i<count;i+) /排序 for(int j=i+1;j<count;j+) ratio1=Double.parseDouble(str2i3); ratio2=Double.parseDouble(str2j3); for(int i=0;i<str2.length;i+) text1.append("t"); for(int j=0;j<6;j+) text1.append(str2ij+"tt"); text1.append("nn"); if(e.getSource = check) Check check = new Check; if(e.getSource = check1) Check1 check1 = new Check1; import java.awt.Color; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import javax.swing.*; public class Check extends JFrame implements ItemListener JLabel j1 = new JLabel("学号："); JLabel j2 = new JLabel("姓名："); JLabel j3 = new JLabel("班级："); JLabel j4 = new JLabel("按科目查询："); JTextField text1 = new JTextField; JTextField text2 = new JTextField; JTextField text3 = new JTextField; String items = "Java", "C+", "C#" JComboBox jcb = new JComboBox(items); JButton sure = new JButton("确定"); JButton reser = new JButton("取消"); public Check 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); Override public void itemStateChanged(ItemEvent e) JComboBox c = (JComboBox) e.getSource; if(e.getStateChange = ItemEvent.SELECTED) import java.awt.Color; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import javax.swing.*; public class Check1 extends JFrame implements ItemListener JLabel j1 = new JLabel("条件1："); JLabel j2 = new JLabel("条件2："); JLabel j4 = new JLabel("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" JComboBox jcb = new JComboBox(items); JComboBox jcb1 = new JComboBox(items1); JComboBox jcb2 = new JComboBox(items2); JButton sure = new JButton("确定"); JButton reser = new JButton("取消"); public Check1 super("查询"); setLayout(null); j4.setBounds(10, 10, 80, 30); j1.setBounds(220, 10, 80, 30); j2.setBounds(410, 10, 80, 30); add(j1); add(j2); add(j4); jcb.setBounds(20, 50, 80, 25); jcb1.setBounds(200, 50, 80, 25); jcb2.setBounds(400, 50, 80, 25); add(jcb); add(jcb1); add(jcb2); sure.setBounds(180, 120, 80, 30); reser.setBounds(300, 120, 80, 30); add(sure); add(reser); setBounds(200, 100, 600, 200); setVisible(true); Override public void itemStateChanged(ItemEvent e) JComboBox c = (JComboBox) e.getSource; if(e.getStateChange = ItemEvent.SELECTED)