delete.java

利用JAVA和Access做成一个学生信息管理系统

//删除用户的界面
package com.yanjun;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.*;
public class delete extends JFrame{
    JLabel  L1=new JLabel("用户的名称");
    JTextField txt=new JTextField(20);
    JLabel  L2=new JLabel("用户的密码");
    JPasswordField pass1 = new JPasswordField(20);
    String [] types={"学生","教师"};
    JComboBox cb=new JComboBox();
    JButton b1=new JButton("删除");
    JButton b2=new JButton("取消");
    ActionListener a1 = new ActionListener() 
    {
      public void actionPerformed(ActionEvent e)
	  {
    	  String id1=txt.getText();
    	  String id2=pass1.getText();
    	  int num=cb.getSelectedIndex();
    	  if(num==0)
    	  {if(link.check1(id1,id2)){
    	   if(deluser.del1(id1,id2))JOptionPane.showMessageDialog(null, 
                  "你已经删除成功", "提示信息", 
                  JOptionPane.ERROR_MESSAGE);
    	   else JOptionPane.showMessageDialog(null, 
                   "删除不成功", "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);
    	  }
      if(num==1)
	  {if(link.check2(id1,id2)){
	   if(deluser.del2(id1,id2))JOptionPane.showMessageDialog(null, 
              "你已经删除成功", "提示信息", 
              JOptionPane.ERROR_MESSAGE);
	   else JOptionPane.showMessageDialog(null, 
               "删除不成功", "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 delete()
    {
    	super("删除用户");
    	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(cb);
    	cp.add(b1);
    	cp.add(b2);
    	b1.addActionListener(a1);
    	b2.addActionListener(a2);
    	setSize(350,150);
    	show();
    }
}