《数据库应用》课程设计人事管理系统(java源代码)..docVIP

《数据库应用》课程设计人事管理系统(java源代码) 《数据库应用》课程设计——人事管理系统（java源代码） //用户登陆类 package classsource; import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.sql.*; public class Land extends JFrame{ JFrame jf ; JTextField textName=new JTextField(); JPasswordField textage=new JPasswordField(); JLabel label = new JLabel(员工管理系统); JLabel labelName=new JLabel(用户名：); JLabel labelage=new JLabel(密码：); JButton buttonEnter=new JButton(登录); JButton buttoncancel=new JButton(清空); public Land(){ jf=this; setTitle(登录); Font f = new Font(新宋体,Font.PLAIN,12); Container con = getContentPane(); con.setLayout(null); label.setBounds(95,10,110,20); label.setFont(new Font(新宋体,Font.PLAIN,14)); con.add(label); labelName.setBounds(45,40,55,20); labelName.setFont(f); con.add(labelName); textName.setBounds(95,40,120,20); con.add(textName); labelage.setBounds(45,70,45,20); con.add(labelage); labelage.setFont(f); textage.setBounds(95,70,120,20); con.add(textage); buttonEnter.setBounds(90,110,60,20); buttonEnter.setFont(f); con.add(buttonEnter); //登陆的鼠标监听 buttonEnter.addMouseListener(new MouseAdapter(){ public void mouseClicked(MouseEvent me){ if(textName.getText().equals()){ new JOptionPane().showMessageDialog(null,用户名不能为空!); } else if(textage.getText().equals()){ new JOptionPane().showMessageDialog(null,密码不能为空!); } else{ String sql=select * from UserInformation where User_Name = + textName.getText() + and Password = + textage.getText()+ ; System.out.println(sql); Judge(sql); } } }); buttoncancel.setBounds(155,110,60,20); buttoncancel.setFont(f); con.add(buttoncancel); //清空按钮的鼠标监听方法 buttoncancel.addMouseListener(new MouseAdapter(){ public void mouseClicked(MouseEvent me){ textName.setText(); textage.setText(); } }); setResizable(false); Image img=Toolkit.getDefaultToolkit().getImage(image\\main.gif); setIco