1、运行代码主代码:Login.Javaimport javax.swing.JFrame;import javax.swing.JButton;import javax.swing.JOptionPane;import javax.swing.JPasswordField;import javax.swing.JTextField;import javax.swing.JLabel;import java.awt.event.ActionListener;import java.awt.event.ActionEvent;import java.util.Map;public class Log
2、in public JFrame frame; private JTextField t_username; private JPasswordField t_password; public Login() initialize(); private void initialize() frame = new JFrame(); frame.setTitle(用户登录); frame.setBounds(100, 100, 450, 300); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.getContentPane
3、().setLayout(null); JButton btnNewButton = new JButton(登录 btnNewButton.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e) String username=t_username.getText(); char password=t_password.getPassword(); if(username=null | .equals(username) JOptionPane.showMessageDialog(nu
4、ll, 请输入用户名, 提示,JOptionPane.WARNING_MESSAGE); t_username.requestFocus(); return; if(password=null | password.length=0)请输入密码 t_password.requestFocus(); /登录 if(TxlService.isLogin(username, new String(password) /保存用户信息 TongXunLu stu=new TongXunLu(); stu.frame.setVisible(true); frame.setVisible(false); e
5、lse用户名或密码错误 t_username.setText( t_password.setText( ); btnNewButton.setBounds(120, 135, 90, 25); frame.getContentPane().add(btnNewButton); JButton btnNewButton_1 = new JButton(取消 btnNewButton_1.setBounds(250, 135, 90, 25); btnNewButton_1.addActionListener(new ActionListener() frame.getContentPane().
6、add(btnNewButton_1); JLabel lblNewLabel = new JLabel(用户名: lblNewLabel.setBounds(73, 37, 80, 15); frame.getContentPane().add(lblNewLabel); t_username = new JTextField(20); t_username.setBounds(137, 34, 220, 27); frame.getContentPane().add(t_username); JLabel label = new JLabel(密码: label.setBounds(73,
7、 69, 80, 15); frame.getContentPane().add(label); t_password=new JPasswordField(12); t_password.setBounds(137, 65, 220, 27); frame.getContentPane().add(t_password);类:TongxunluMain.javaimport java.awt.EventQueue;public class TongxunluMain public static void main(String args) EventQueue.invokeLater(new
8、 Runnable() public void run() try Login window = new Login(); window.frame.setVisible(true); catch (Exception e) e.printStackTrace();TongXunLu.javaimport java.sql.ResultSet;import javax.swing.JScrollPane;import javax.swing.JTable;import javax.swing.table.DefaultTableModel;public class TongXunLu priv
9、ate DefaultTableModel table; private JTable jtable; private JLabel lname; private JTextField tname; private JLabel lqq; private JTextField tqq; private JLabel lphone; private JTextField tphone; String col=姓名,QQ电话; TongXunLu window = new TongXunLu(); public TongXunLu() 学生通讯录管理 frame.setBounds(100, 10
10、0,650, 360); jtable=new JTable(); jtable.setBounds(80,50,500,150); table=new DefaultTableModel(col,0); JScrollPane scrollPane = new JScrollPane(jtable); scrollPane.setBounds(80,80,500,180); frame.getContentPane().add(scrollPane); lname = new JLabel(姓名: lname.setBounds(80, 50, 40, 20); frame.getContentPane().add(lname); tname = new JTextField(); tname.setBounds(120, 50, 100, 20); frame.getContentPane().add(tname); lqq = new JLabel(QQ: lqq.setBounds(230, 50, 40, 20); frame.getContentPane().add(lqq); tqq = new JTextField(); tqq.setBounds(260, 50, 100, 20); frame.getContentPane().add(tqq); lpho
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