java基于简单工厂模式的登录窗口 import java.awt.*; import javax.swing.*; import javax.swing.border.EmptyBorder; public class LoginFrame extends JFrame { public LoginFrame() { super("xxx"); init(); setDefaultCloseOperation(EXIT_ON_CLOSE);//窗口点击 //“关闭”结束线程 } private void init() { setContentPane(createMainPane()); setSize(300, 280); setResizable(false); } } private JPanel createMainPane() { JPanel p = new JPanel(new BorderLayout()); p.setBorder(new EmptyBorder(20, 20, 20, 20)); p.add(BorderLayout.NORTH, new JLabel("xxxxxx", JLabel.CENTER)); p.add(BorderLayout.CENTER, createMiddlePane()); p.add(BorderLayout.SOUTH, createBPane()); return p; private JPanel createMiddlePane() { JPanel p = new JPanel(new BorderLayout()); p.add(BorderLayout.NORTH, createIDPWDPane()); 

return p; } private JPanel createIDPWDPane() { JPanel p = new JPanel(new GridLayout(2, 1, 0, 6)); p.setBorder(new EmptyBorder(20, 20, 20, 20)); p.add(createIDPane()); p.add(createPWDPane()); return p; } private JPanel createIDPane() { JPanel p = new JPanel(new BorderLayout()); p.add(BorderLayout.WEST, new JLabel("UserName：")); p.setBorder(new EmptyBorder(10, 10, 10, 10)); JTextField idField = new JTextField(20); p.add(BorderLayout.CENTER, idField); return p; } } private JPanel createPWDPane() { JPanel p = new JPanel(new BorderLayout()); p.setBorder(new EmptyBorder(10, 10, 10, 10)); p.add(BorderLayout.WEST, new JLabel("Password：")); JPasswordField pwdField = new JPasswordField(20); pwdField.enableInputMethods(true); p.add(BorderLayout.CENTER, pwdField); return p; private JPanel createBPane() { JPanel p = new JPanel(new FlowLayout()); 

JButton login = new JButton("Login"); JButton cancel = new JButton("Cancel"); p.add(login); p.add(cancel); return p; } } } public static void main(String[] args) { LoginFrame frame=new LoginFrame(); frame.setVisible(true);