关于JOptionPane.showMessageDialog

luobiao 2003-08-24 04:13:24

请教一个非常菜的问题,JOptionPane.showMessageDialog 里的字符如果改字体和大小,查Java文档半天都没有找到,请教各位高手..不胜感激!!!!

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切换为时间正序

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jvcit 2003-08-24

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o ,i see

xjffj 2003-08-24

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正常情况下无法改变，如果非要改变，考虑改变UIManager中的默认值。

luobiao 2003-08-24

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谢谢! 问题已解决!!

还行 javax.JOptionPane.showMessageDialog

public void freshTable(String sql){ myConnection conn=new myConnection(); ResultSet rs; rs=conn.getResult(sql); if (rs!=null){ try{ mm.setRowCount(0); table.setModel(mm); while(rs.next()){ String 学号 = rs.getString("学号"); String 姓名 = rs.getString("姓名"); String 性别 = rs.getString("性别"); String 民族 = rs.getString("民族"); String 年龄 = rs.getString("年龄"); String 年级 = rs.getString("年级"); String 班级 = rs.getString("班级"); String 专业 = rs.getString("专业"); String[] cloumns ={学号,姓名,性别,民族,年龄,年级,班级,专业}; mm.addRow(cloumns); } //table.clearSelection(); table.setModel(mm); }catch(Exception e){ System.out.println(e.toString()); } } } public void actionPerformed(ActionEvent e){ //退出 if (e.getSource()==miExit){ System.exit(0); //查找 }else if(e.getSource()==miFind){ findFrame ff=new findFrame(this); ff.setVisible(true); //添加 }else if(e.getSource()==miAdd){ addFrame af=new addFrame(this); af.setVisible(true); //修改 }else if(e.getSource()==miEdit){ if (table.getSelectedRow()==-1){ JOptionPane.showMessageDialog(null, "请选择你要修改的内容", "温馨提示", JOptionPane.INFORMATION_MESSAGE); }else{ editFrame ef=new editFrame(this); ef.学号.setText((String)table.getValueAt(table.getSelectedRow(),0)); ef.姓名.setText((String)table.getValueAt(table.getSelectedRow(),1)); ef.性别.setText((String)table.getValueAt(table.getSelectedRow(),2)); ef.民族.setText((String)table.getValueAt(table.getSelectedRow(),3)); ef.年龄.setText((String)table.getValueAt(table.getSelectedRow(),4)); ef.年级.setText((String)table.getValueAt(table.getSelectedRow(),5)); ef.班级.setText((String)table.getValueAt(table.getSelectedRow(),6)); ef.专业.setText((String)table.getValueAt(table.getSelectedRow(),7)); ef.setVisible(true); this.freshTable("select * from 学生信息表"); } //删除 }else if(e.getSource()==miDel){ if (table.getSelectedRow()==-1){ JOptionPane.showMessageDialog(null, "请选择你要删除的行", "温馨提示", JOptionPane.INFORMATION_MESSAGE); }else { String sql="delete from 学生信息表 where 学号 = '"+table.getValueAt(table.getSelectedRow(),0)+"'"; //JOptionPane.showMessageDialog(null, sql, "温馨提示", JOptionPane.INFORMATION_MESSAGE); myConnection conn=new myConnection(); if (conn.executeSql(sql)){ JOptionPane.showMessageDialog(null, "成功删除", "温馨提示", JOptionPane.INFORMATION_MESSAGE); this.freshTable("select * from 学生信息表"); }else { JOptionPane.showMessageDialog(null, "未知错误", "删除失败", JOptionPane.INFORMATION_MESSAGE); } } //显示 }else if(e.getSource()==miShow){ //JOptionPane.showMessageDialog(null, "未知错误", "删除失败", JOptionPane.INFORMATION_MESSAGE); this.freshTable("select * from 学生信息表"); //用户管理 }else if(e.getSource()==miUser){ userFrame uf=new userFrame(); uf.setVisible(true); //关于 }else if(e.getSource()==miAbout){ aboutFrame af=new aboutFrame(); af.setVisible(true); } } } class myConnection{ ResultSet re; String strurl = "jdbc:odbc:driver={Microsoft Access Driver (*.mdb)};DBQ=学生管理数据库.mdb"; public myConnection(){} public ResultSet getResult(String sql){ try{ Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); Connection conn=DriverManager.getConnection(strurl); Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE); ResultSet re=stmt.executeQuery(sql); return re; } catch(Exception e){ System.out.println("getResult------"+e.toString()); return null; } } public boolean executeSql(String sql){ try{ Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); Connection conn=DriverManager.getConnection(strurl); Statement stmt=conn.createStatement(); stmt.executeUpdate(sql); conn.commit(); return true; } catch(Exception e){ System.out.println("executeSql----"+e.toString()); return false; } } } class addFrame extends JDialog implements ActionListener{ public static final int WIDTH = 400; public static final int HEIGHT = 400; JLabel 学号1,姓名1,性别1,民族1,年龄1,年级1,班级1,专业1; JTextField 学号,姓名,性别,民族,年龄,年级,班级,专业; JButton b; JPanel p; mainFrame mf; public addFrame(mainFrame mmf){ setTitle("修改学生信息"); setSize(WIDTH,HEIGHT); setLocation(120,180); Container contentPane = getContentPane(); contentPane.setLayout(new FlowLayout()); 学号1=new JLabel("学号"); 姓名1=new JLabel("姓名"); 性别1=new JLabel("性别"); 民族1=new JLabel("民族"); 年龄1=new JLabel("年龄"); 年级1=new JLabel("年级"); 班级1=new JLabel("班级"); 专业1=new JLabel("专业"); 学号=new JTextField(5); 姓名=new JTextField(5); 性别=new JTextField(5); 民族=new JTextField(5); 年龄=new JTextField(5); 年级=new JTextField(5); 班级=new JTextField(10); 专业=new JTextField(10); b=new JButton("确定"); p=new JPanel(); p.setLayout(new GridLayout(10,2,5,5)); p.add(学号1); p.add(学号); p.add(姓名1); p.add(姓名); p.add(性别1); p.add(性别); p.add(民族1); p.add(民族); p.add(年龄1); p.add(年龄); p.add(年级1); p.add(年级); p.add(班级1); p.add(班级); p.add(专业1); p.add(专业); p.add(new Label("")); p.add(new Label("")); p.add(b); contentPane.add(p); //添加按钮监听器 b.addActionListener(this); mf=mmf; } public void actionPerformed(ActionEvent e){ if (学号.getText().toString().equals("")){ JOptionPane.showMessageDialog(null, "请输入学号", "温馨提示", JOptionPane.INFORMATION_MESSAGE); }else if (姓名.getText().toString().equals("")){ JOptionPane.showMessageDialog(null, "请输入姓名", "温馨提示", JOptionPane.INFORMATION_MESSAGE); }else if (年龄.getText().toString().equals("")){ JOptionPane.showMessageDialog(null, "请输入年龄", "温馨提示", JOptionPane.INFORMATION_MESSAGE); }else{ String sql="select * from 学生信息表 where 学号='" + 学号.getText() + "'"; myConnection conn=new myConnection(); ResultSet rs; rs=conn.getResult(sql); try{ //System.out.println(rs.getRow()); if (rs.next()){ JOptionPane.showMessageDialog(null, "此学号已经存在", "温馨提示", JOptionPane.INFORMATION_MESSAGE); }else{ sql="insert into 学生信息表 values('" +学号.getText()+"','"+ 姓名.getText() +"','"+ 性别.getText() +"','"+ 民族.getText() +"',"+ 年龄.getText() +",'"+ 年级.getText() +"','"+ 班级.getText() +"','"+ 专业.getText() +"')"; if (conn.executeSql(sql)){ JOptionPane.showMessageDialog(null, "添加成功", "温馨提示", JOptionPane.INFORMATION_MESSAGE); mf.freshTable("select * from 学生信息表"); 学号.setText(""); 姓名.setText(""); 性别.setText(""); 民族.setText(""); 年龄.setText(""); 年级.setText(""); 班级.setText(""); 专业.setText(""); }else{ JOptionPane.showMessageDialog(null, "添加失败", "温馨提示", JOptionPane.INFORMATION_MESSAGE); } } }catch(Exception er){ System.out.println(er.toString()); } } } } class editFrame extends JDialog implements ActionListener{ public static final int WIDTH = 400; public static final int HEIGHT = 400; JLabel 学号1,姓名1,性别1,民族1,年龄1,年级1,班级1,专业1; JTextField 学号,姓名,性别,民族,年龄,年级,班级,专业; JButton b; JPanel p; mainFrame mf; public editFrame(mainFrame mmf){ setTitle("修改学生信息"); setSize(WIDTH,HEIGHT); setLocation(120,180); Container contentPane = getContentPane(); contentPane.setLayout(new FlowLayout()); 学号1=new JLabel("学号"); 姓名1=new JLabel("姓名"); 性别1=new JLabel("性别"); 民族1=new JLabel("民族"); 年龄1=new JLabel("年龄"); 年级1=new JLabel("年级"); 班级1=new JLabel("班级"); 专业1=new JLabel("专业"); 学号=new JTextField(5); 姓名=new JTextField(5); 性别=new JTextField(5); 民族=new JTextField(5); 年龄=new JTextField(5); 年级=new JTextField(5); 班级=new JTextField(10); 专业=new JTextField(10); 学号.setEnabled(false); b=new JButton("确定"); p=new JPanel(); p.setLayout(new GridLayout(10,2,5,5)); p.add(学号1); p.add(学号); p.add(姓名1); p.add(姓名); p.add(性别1); p.add(性别); p.add(民族1); p.add(民族); p.add(年龄1); p.add(年龄); p.add(年级1); p.add(年级); p.add(班级1); p.add(班级); p.add(专业1); p.add(专业); p.add(new Label("")); p.add(new Label("")); p.add(b); contentPane.add(p); //添加按钮监听器 b.addActionListener(this); mf=mmf; } public void actionPerformed(ActionEvent e){ if (学号.getText().toString().equals("")){ JOptionPane.showMessageDialog(null, "请输入学号", "温馨提示", JOptionPane.INFORMATION_MESSAGE); }else if (姓名.getText().toString().equals("")){ JOptionPane.showMessageDialog(null, "请输入姓名", "温馨提示", JOptionPane.INFORMATION_MESSAGE); }else if (年龄.getText().toString().equals("")){ JOptionPane.showMessageDialog(null, "请输入年龄", "温馨提示", JOptionPane.INFORMATION_MESSAGE); }else{ String sql="update 学生信息表 set 姓名='"+姓名.getText()+"',性别='"+性别.getText()+"',年龄="+年龄.getText()+",年级='"+年级.getText()+"',班级='"+班级.getText()+"',专业='"+专业.getText()+"',民族='"+民族.getText()+"' where 学号='" + 学号.getText() + "'"; myConnection conn=new myConnection(); try{ //JOptionPane.showMessageDialog(null, sql, "温馨提示", JOptionPane.INFORMATION_MESSAGE); if (conn.executeSql(sql)){ JOptionPane.showMessageDialog(null, "修改成功", "温馨提示", JOptionPane.INFORMATION_MESSAGE); mf.freshTable("select * from 学生信息表"); this.dispose(); }else{ JOptionPane.showMessageDialog(null, "修改失败", "温馨提示", JOptionPane.INFORMATION_MESSAGE); } }catch(Exception er){ System.out.println(er.toString()); } } } } class findFrame extends JDialog implements ActionListener{ mainFrame mf; JPanel p; JComboBox c; JTextField t; JButton b; JButton fAll; String sql="select * from student"; String[] colStr={"学号","姓名","性别","民族","年龄","年级","班级","专业"}; public findFrame(mainFrame mmf){ mf=mmf; p=new JPanel(); c=new JComboBox(colStr); t=new JTextField(10); b=new JButton("查找"); fAll=new JButton("全部显示"); b.addActionListener(this); fAll.addActionListener(this); p.add(new JLabel("选择")); p.add(c); p.add(new JLabel("查找内容")); p.add(t); p.add(b); p.add(fAll); this.add(p); this.setTitle("查找"); this.setSize(450,80); } public void actionPerformed(ActionEvent e){ //查找 if (e.getSource()==b){ String selectStr=c.getSelectedItem().toString(); if (selectStr=="年龄"){ sql="select * from 学生信息表 where "+selectStr+" = "+t.getText().toString(); } else { sql="select * from 学生信息表 where "+selectStr+" = '"+t.getText().toString()+"'"; } mf.freshTable(sql); //全部显示 }if (e.getSource()==fAll){ sql="select * from 学生信息表"; mf.freshTable(sql); } } } class aboutFrame extends JDialog{ aboutFrame(){ JPanel p1=new JPanel(); p1.add(new JLabel("学生信息管理系统")); p1.add(new JLabel("版权所有:农福刚")); p1.add(new JLabel("农福刚有限责任公司出口")); p1.add(new JLabel("QQ:14159391")); p1.setLayout(new GridLayout(4,1,5,5)); this.add(p1); this.setTitle("关于我"); this.setSize(300,200); } } class userFrame extends JFrame implements ActionListener{ JTextField user,pass; JButton add,del; JTable t; JPanel p1,p2,p3,p4,p5; DefaultTableModel m; public userFrame(){ p1=new JPanel(); p2=new JPanel(); p3=new JPanel(); p4=new JPanel(); p5=new JPanel(); user=new JTextField(8); pass=new JTextField(8); add=new JButton("添加"); del=new JButton("删除"); String[] col = {"用户名","密码"}; m= new DefaultTableModel(col,0); t=new JTable(); t.setModel(m); JScrollPane sp = new JScrollPane(t); p1.add(new JLabel("用户名")); p1.add(user); p1.add(new JLabel("密码")); p1.add(pass); p1.add(add); p2.add(sp); p3.add(del); add.addActionListener(this); del.addActionListener(this); myConnection conn=new myConnection(); ResultSet rs; rs=conn.getResult("select * from 管理员"); if (rs!=null){ try{ //m.setRowCount(0); //table.setModel(mm); while(rs.next()){ String 用户名 = rs.getString("用户名"); String 密码 = rs.getString("密码"); String[] cloumns ={用户名,密码}; m.addRow(cloumns); } t.setModel(m); }catch(Exception e){ System.out.println(e.toString()); } } this.add(p1,BorderLayout.NORTH); this.add(p2,BorderLayout.CENTER); this.add(p3,BorderLayout.SOUTH); this.add(p4,BorderLayout.WEST); this.add(p5,BorderLayout.EAST); this.setTitle("用户管理"); this.setSize(600,400); } public void actionPerformed(ActionEvent e){ //添加 if (e.getSource()==add){ if (user.getText().toString().equals("")){ JOptionPane.showMessageDialog(null, "请输入用户名", "温馨提示", JOptionPane.INFORMATION_MESSAGE); }else if (pass.getText().toString().equals("")){ JOptionPane.showMessageDialog(null, "请输入密码", "温馨提示", JOptionPane.INFORMATION_MESSAGE); }else{ myConnection conn=new myConnection(); ResultSet rs; try{ rs=conn.getResult("select * from 管理员 where 用户名='"+user.getText().toString()+"'"); if (rs.next()){ JOptionPane.showMessageDialog(null, "此用户已经存在", "温馨提示", JOptionPane.INFORMATION_MESSAGE); }else{ if (conn.executeSql("insert into 管理员 values('"+user.getText().toString()+"','"+pass.getText().toString()+"')")){ String[] newUser={user.getText(),pass.getText()}; m.addRow(newUser); t.setModel(m); JOptionPane.showMessageDialog(null, "添加成功", "温馨提示", JOptionPane.INFORMATION_MESSAGE); }else{ JOptionPane.showMessageDialog(null, "添加失败", "温馨提示", JOptionPane.INFORMATION_MESSAGE); } } }catch(Exception er){ System.out.println(er.toString()); } } //删除 }else if (e.getSource()==del){ if (t.getSelectedRow()==-1){ JOptionPane.showMessageDialog(null, "请选择你要删除的行", "温馨提示", JOptionPane.INFORMATION_MESSAGE); }else { String sql="delete from 管理员 where 用户名 = '"+t.getValueAt(t.getSelectedRow(),0)+"'"; //JOptionPane.showMessageDialog(null, sql, "温馨提示", JOptionPane.INFORMATION_MESSAGE); myConnection conn=new myConnection(); if (conn.executeSql(sql)){ m.removeRow(t.getSelectedRow()); t.setModel(m); //t.removeRowSelectionInterval(); JOptionPane.showMessageDialog(null, "成功删除", "温馨提示", JOptionPane.INFORMATION_MESSAGE); }else { JOptionPane.showMessageDialog(null, "未知错误", "删除失败", JOptionPane.INFORMATION_MESSAGE); } } } } } class loginFrame extends JDialog implements ActionListener{ JPanel p; JTextField user,pass; JButton login,cancel; public loginFrame(){ p=new JPanel(); user=new JTextField(10); pass=new JTextField(10); login=new JButton("登录"); cancel=new JButton("退出"); user.setText("admin"); pass.setText("admin"); login.addActionListener(this); cancel.addActionListener(this); p.add(new JLabel("账号")); p.add(user); p.add(new JLabel("密码")); p.add(pass); p.add(login); p.add(cancel); this.add(p); this.setTitle("系统登录"); this.setSize(180,130); } public void actionPerformed(ActionEvent e){ //查找 if (e.getSource()==login){ if (user.getText().toString().equals("")){ JOptionPane.showMessageDialog(null, "请输入用户名", "温馨提示", JOptionPane.INFORMATION_MESSAGE); }else if (pass.getText().toString().equals("")){ JOptionPane.showMessageDialog(null, "请输入密码", "温馨提示", JOptionPane.INFORMATION_MESSAGE); }else{ myConnection conn=new myConnection(); ResultSet rs; String sql="select * from 管理员 where 用户名 = '"+user.getText().toString()+"' and 密码 = '"+pass.getText().toString()+"'"; try{ rs=conn.getResult(sql); if (rs.next()){ this.dispose(); //JOptionPane.showMessageDialog(null, "此用户已经存在", "温馨提示", JOptionPane.INFORMATION_MESSAGE); sql="select * from 学生信息表"; mainFrame mf=new mainFrame(); mf.setTitle("农福刚学生信息管理系统"); mf.setSize(600,486); mf.freshTable(sql); mf.setVisible(true); mf.addWindowListener(new WindowAdapter(){ public void windowClosing(WindowEvent e){ System.exit(0); } }); }else{ JOptionPane.showMessageDialog(null, "用户名或密码错误", "登录失败", JOptionPane.INFORMATION_MESSAGE); } }catch(Exception er){ System.out.println(er.toString()); } } //全部显示 }if (e.getSource()==cancel){ System.exit(0); } } }

java项目package project.action.dialogAction; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JOptionPane; import project.dao.common.DbException; import project.dao.dataDao.LoginInfoDao; import project.dao.dataDaoImpl.LoginInfoDaoImpl; import project.view.dialog.AddLoginInfoDialog; import project.vo.LoginInfoVo; /** * 添加登录账号action * * @author Administrator * */ public class AddLoginInfoAction implements ActionListener { private AddLoginInfoDialog dialog; public AddLoginInfoAction(AddLoginInfoDialog dialog) { this.dialog = dialog; } public void actionPerformed(ActionEvent e) { String name = e.getActionCommand(); if (name.equals("确定")) { // 检验输入是否正确 if (dialog.checkInputValue()) { LoginInfoDao dao = null; LoginInfoVo vo = null; try { // 获得界面输入信息 vo = dialog.getInputInfo(); String confirm = dialog.getConfirm(); if (vo.getLog_pwd().equals(confirm)) { dao = new LoginInfoDaoImpl(); if (dao.insertLoginInfo(vo)) { // 打印提示信息 JOptionPane.showMessageDialog(null, "添加登录人员成功", "提示信息", JOptionPane.YES_OPTION); dialog.dispose(); } else { // 打印提示信息 JOptionPane.showMessageDialog(null, "添加登录人员失败", "提示信息", JOptionPane.YES_OPTION); } } else { // 如果密码确认输入错误，打印提示信息 JOptionPane.showMessageDialog(null, "密码确认错误，请重新输入", "提示信息", JOptionPane.YES_OPTION); } } catch (DbException ex) { JOptionPane.showMessageDialog(null, ex.getMessage(), "提示信息", JOptionPane.YES_OPTION); } } else { JOptionPane.showMessageDialog(null, "请确认输入是否完整正确", "提示信息", JOptionPane.YES_OPTION); } } else if (name.equals("取消")) { dialog.dispose(); } } }

import javax.swing.JOptionPane; public class Product{ public static void main(String args[]) {String firstNumber; String secondNumber; int number1=0; int number2=0; int product; firstNumber=JOptionPane.showInputDialog("输入乘数"); secondNumber=JOptionPane.showInputDialog("shurubeichengshu"); try{ number1=Integer.parseInt(firstNumber); number2=Integer.parseInt(secondNumber); } catch(NumberFormatException ex){ JOptionPane.showMessageDialog(null,"aaaaaaaaaaaaaaaa","xiaoxi",JOptionPane.PLAIN_MESSAGE); System.exit(0); } product=number1*number2; JOptionPane.showMessageDialog(null,number1+"*"+number2+"="+product,"jieguo",JOptionPane.PLAIN_MESSAGE); System.exit(0); } }

import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Text extends JFrame implements ActionListener,TextListener { private JLabel username,password,email,telephone; private JTextField usernameField,emailField; private TextField teleField; private JPasswordField passwordField; private JButton registButton,cancelButton; public Text() { super("用户注册"); Container container = getContentPane(); container.setLayout(new FlowLayout()); username = new JLabel("用户名"); username.setToolTipText("请输入用户名"); password = new JLabel("密码"); password.setToolTipText("密码不能少于6位"); email = new JLabel("邮箱"); email.setToolTipText("邮箱中必须包含@字符"); telephone = new JLabel("电话"); telephone.setToolTipText("电话只能为数字"); usernameField = new JTextField(15); usernameField.addActionListener(this); passwordField = new JPasswordField(15); passwordField.addActionListener(this); emailField = new JTextField(15); emailField.addActionListener(this); teleField = new TextField(21); teleField.addActionListener(this); teleField.addTextListener(this); registButton = new JButton("注册"); cancelButton = new JButton("取消"); container.add(username); container.add(usernameField); container.add(password); container.add(passwordField); container.add(email); container.add(emailField); container.add(telephone); container.add(teleField); container.add(registButton); container.add(cancelButton); registButton.addActionListener(this); cancelButton.addActionListener(this); setSize(250,200); setVisible(true); setResizable(false); } public void textValueChanged(TextEvent event) { if (event.getSource() == teleField) { /*if (!checkNumber(teleField.getText())) { JOptionPane.showMessageDialog(this,"电话必须为数字","温馨提示",JOptionPane.INFORMATION_MESSAGE); teleField.setText(""); } */ } } public void actionPerformed(ActionEvent event) { if (event.getSource() == usernameField) { if (usernameField.getText().equals("")) { JOptionPane.showMessageDialog(null,"用户名不能为空","温馨提示",JOptionPane.INFORMATION_MESSAGE); } } if (event.getSource() == passwordField) { if (passwordField.getPassword().length == 0) { JOptionPane.showMessageDialog(this,"密码不能为空","温馨提示",JOptionPane.INFORMATION_MESSAGE); } else if (passwordField.getPassword().length < 6) { JOptionPane.showMessageDialog(this,"密码长度不能小于6位","温馨提示",JOptionPane.INFORMATION_MESSAGE); passwordField.setText(""); } } if (event.getSource() == emailField) { if (emailField.getText().indexOf("@") < 0 || emailField.getText().indexOf("@") >= (emailField.getText().length() - 1) || emailField.getText().equals("")) { JOptionPane.showMessageDialog(this,"您的邮箱格式不正确","温馨提示",JOptionPane.INFORMATION_MESSAGE); emailField.setText(""); } } if (event.getSource() == teleField) { if (teleField.getText().equals("")) { JOptionPane.showMessageDialog(this,"联系电话不能为空","温馨提示",JOptionPane.INFORMATION_MESSAGE); } else if (!checkNumber(teleField.getText())) { JOptionPane.showMessageDialog(this,"电话必须为数字","温馨提示",JOptionPane.INFORMATION_MESSAGE); teleField.setText(""); } } if (event.getSource() == registButton) { if (usernameField.getText().equals("") || passwordField.getPassword().length == 0 || emailField.getText().equals("") || teleField.getText().equals("")) { JOptionPane.showMessageDialog(this, "您填写的信息不完整","温馨提示",JOptionPane.INFORMATION_MESSAGE); usernameField.setText(""); passwordField.setText(""); emailField.setText(""); teleField.setText(""); } else if (passwordField.getPassword().length < 6) { JOptionPane.showMessageDialog(this,"密码长度不能小于6位","温馨提示",JOptionPane.INFORMATION_MESSAGE); passwordField.setText(""); } else if (emailField.getText().indexOf("@") < 0 || emailField.getText().indexOf("@") >= (emailField.getText().length() - 1)) { JOptionPane.showMessageDialog(this,"您的邮箱格式不正确","温馨提示",JOptionPane.INFORMATION_MESSAGE); emailField.setText(""); } else if (!checkNumber(teleField.getText())) { JOptionPane.showMessageDialog(this,"电话必须为数字","温馨提示",JOptionPane.INFORMATION_MESSAGE); teleField.setText(""); } else JOptionPane.showMessageDialog(this,"恭喜您,注册成功","温馨提示",JOptionPane.INFORMATION_MESSAGE); } if (event.getSource() == cancelButton) { usernameField.setText(""); passwordField.setText(""); emailField.setText(""); teleField.setText(""); } } public boolean checkNumber(String str) { for (int i=0;i

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