regedit.java

学生信息管理系统,能显示登录,管理,查询,增添删除等功能

//注册的界面
package com.yanjun;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.*;

public class Regedit extends JFrame{
	JLabel  L1=new JLabel("新建用户名称");
    JTextField txt=new JTextField(20);
    JLabel  L2=new JLabel("新建用户密码");
    JPasswordField pass1 = new JPasswordField(20);
    JLabel  L3=new JLabel("确认用户密码");
    JPasswordField pass2 = new JPasswordField(20);
    String [] types={"学生","教师"};
    JComboBox cb=new JComboBox();
    JButton b1=new JButton("注册");
    JButton b2=new JButton("取消");
    ActionListener a1 = new ActionListener() 
    {
      public void actionPerformed(ActionEvent e)
	  {
    	  String id=txt.getText();
    	  String id1=pass1.getText();
    	  String id2=pass2.getText();
    	  int num=cb.getSelectedIndex();
    	  if(id1.equals(id2))
    	  { 
    	  if(num==0){
    	  if(adduser.add1(id,id1))
    	  JOptionPane.showMessageDialog(null, 
                  "你已经注册成功", "提示信息", 
                  JOptionPane.ERROR_MESSAGE);
    	  else JOptionPane.showMessageDialog(null, 
                  "你所要建立的用户已经存在", "提示错误信息", 
                  JOptionPane.ERROR_MESSAGE);
    	  
    	  }
    	  if(num==1){if(adduser.add2(id,id1))
        	  JOptionPane.showMessageDialog(null, 
                      "你已经注册成功", "提示信息", 
                      JOptionPane.ERROR_MESSAGE);
        	  else JOptionPane.showMessageDialog(null, 
                      "你所要建立的用户已经存在", "提示错误信息", 
                      JOptionPane.ERROR_MESSAGE);
        	  
        	  }
    	  
    	  }
    	  else JOptionPane.showMessageDialog(null, 
                  "你输入的密码不符", "提示错误信息", 
                  JOptionPane.ERROR_MESSAGE);
	  }
    };
    ActionListener a2 = new ActionListener() 
    {
      public void actionPerformed(ActionEvent e)
	  {
   	   dispose();
	  }
    };
    public Regedit()
    {
    	super("新建用户");
    	Container cp=getContentPane();
    	cp.setLayout(new FlowLayout());
    	for(int i=0;i<types.length;i++)
        cb.addItem(types[i]);
    	cp.add(L1);
    	cp.add(txt);
    	cp.add(L2);
    	cp.add(pass1);
    	cp.add(L3);
    	cp.add(pass2);
    	cp.add(cb);
    	cp.add(b1);
    	cp.add(b2);
    	b1.addActionListener(a1);
    	b2.addActionListener(a2);
    	setSize(350,150);
    	show();
    }
}