Java-GUI人员管理程序

/* * StudentDelete.java * * Created on 2008年10月16日, 下午11:19 * * To change this template, choose Tools | Template Manager * and open the template in the editor. */ package manage; import javax.swing.*; import java.awt.*; import javax.swing.event.*; import java.awt.event.*; import java.io.*; public class StudentDelete extends JPanel { JLabel lblInputNo; JLabel lblNo; JLabel lblName; JLabel lblShowNo; JLabel lblShowName; JTextField txtInputNo; JButton btnCheck; JButton btnDelete; String no; String name; Font font=new Font("Dialog",Font.PLAIN,16); public StudentDelete(JLabel lblWelcome) { lblWelcome.setText("学生界面——删除学生信息"); setLayout(null); lblInputNo=new JLabel("请输入学生学号："); lblNo=new JLabel(); lblName=new JLabel(); lblShowNo=new JLabel(); lblShowName=new JLabel(); txtInputNo=new JTextField(15); btnCheck=new JButton("查看信息"); btnDelete=new JButton("确定删除"); lblInputNo.setFont(font); lblNo.setFont(font); lblName.setFont(font); lblShowNo.setFont(font); lblShowName.setFont(font); txtInputNo.setFont(font); btnCheck.setFont(font); btnDelete.setFont(font); add(lblInputNo); add(lblNo); add(lblName); add(lblShowNo); add(lblShowName); add(txtInputNo); add(btnCheck); add(btnDelete); lblInputNo.setBounds(30,40,150,30); lblNo.setBounds(30,110,100,30); lblName.setBounds(30,180,100,30); lblShowNo.setBounds(140,110,100,30); lblShowName.setBounds(140,180,100,30); txtInputNo.setBounds(170,40,150,30); btnCheck.setBounds(220,110,100,30); btnDelete.setBounds(220,180,100,30); btnCheck.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { lblNo.setText(""); lblName.setText(""); lblShowName.setText(""); lblShowNo.setText(""); boolean isFind=false; if(txtInputNo.getText().equals("")) { Object[] options = {"确定"}; JOptionPane.showOptionDialog(null, "请输入要删除的学生学号！", "警告", JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE, null, options, options[0]); }else if(IsNumber.isNumber(txtInputNo.getText())==false) { Object[] options = {"确定"}; JOptionPane.showOptionDialog(null, "学生学号必须是数字！", "警告", JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE, null, options, options[0]); }else if(isStudentExits()) { lblNo.setText("学生学号："); lblName.setText("学生姓名："); lblShowNo.setText(no); lblShowName.setText(name); } else { lblNo.setText("没有此学生！"); } } }); btnDelete.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { if(txtInputNo.getText().equals("")) { Object[] options = {"确定"}; JOptionPane.showOptionDialog(null, "请输入要删除的学生学号！", "警告", JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE, null, options, options[0]); }else if(IsNumber.isNumber(txtInputNo.getText())==false) { Object[] options = {"确定"}; JOptionPane.showOptionDialog(null, "学生学号必须是数字！", "警告", JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE, null, options, options[0]); }else if(isStudentExits()) { int choose=JOptionPane.showConfirmDialog(null,"您删除此学生信息吗？","确认",JOptionPane.YES_NO_OPTION); if (choose==JOptionPane.YES_OPTION) { try { File stuData=new File("studentData.txt"); File stuDataTemp=new File("studentDataTemp.txt"); FileReader fr=new FileReader("studentData.txt"); FileWriter fw=new FileWriter("studentDataTemp.txt"); BufferedReader br=new BufferedReader(fr); BufferedWriter bw=new BufferedWriter(fw); no=br.readLine(); name=br.readLine(); while(no!=null) { if(!txtInputNo.getText().equals(no)) { bw.write(no); bw.newLine(); bw.write(name); bw.newLine(); } no=br.readLine(); name=br.readLine(); } bw.flush(); br.close(); bw.close(); stuData.delete(); stuDataTemp.renameTo(new File("studentData.txt")); } catch(IOException e1) { } } if (choose==JOptionPane.NO_OPTION) { } } else { lblNo.setText("没有此学生！"); } } }); } private boolean isStudentExits() { boolean isFind=false; try { FileReader fr=new FileReader("studentData.txt"); BufferedReader br=new BufferedReader(fr); no=br.readLine(); name=br.readLine(); while(no!=null) { if(txtInputNo.getText().equals(no)) { fr.close(); br.close(); return true; } no=br.readLine(); name=br.readLine(); } fr.close(); br.close(); } catch(IOException e1) { } return false; } }