Java登录界面

package test;import java.awt.BorderLayout;import java.awt.FlowLayout;import java.awt.GridLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JPasswordField;import javax.swing.JTextField;import javax.swing.border.EmptyBorder;/** * Java登录界面 * @author JavaApha * 2013年1月25日15:41:38 */public class LoginFrame extends JFrame {private static final long serialVersionUID = 1L;JTextField jtf1;JTextField jtf2;public LoginFrame() {init();}private void init() {setTitle("Java登录页面");setLocation(300, 200);setSize(300, 200); // 设置内容面板setContentPane(createContentPane());}private JPanel createContentPane() {JPanel pane = new JPanel(new BorderLayout(0, 8));pane.setBorder(new EmptyBorder(12, 12, 12, 12));pane.add(BorderLayout.NORTH, new JLabel("", JLabel.CENTER));pane.add(BorderLayout.CENTER, createNamePwdPane());pane.add(BorderLayout.SOUTH, createBtnPane());return pane;}private JPanel createNamePwdPane() {JPanel pane = new JPanel(new BorderLayout());JPanel top = new JPanel(new GridLayout(2, 1, 0, 6));pane.add(BorderLayout.NORTH, top);top.add(createNamePane());top.add(createPwdPane());return pane;}private JPanel createNamePane() {JPanel pane = new JPanel(new BorderLayout(4, 0));pane.add(BorderLayout.WEST, new JLabel("用户名:"));jtf1 = new JTextField();pane.add(BorderLayout.CENTER, jtf1);return pane;}private JPanel createPwdPane() {JPanel pane = new JPanel(new BorderLayout(4, 0));pane.add(BorderLayout.WEST, new JLabel("密     码:"));jtf2 = new JPasswordField();pane.add(BorderLayout.CENTER, jtf2);return pane;}private JPanel createBtnPane() {JPanel pane = new JPanel(new FlowLayout());JButton login = new JButton("登录");login.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {if (jtf2.getText().equals("123")&& jtf1.getText().equals("123")) {System.out.println("登录 ");} else {System.out.println("登录失败");}}});JButton cancel = new JButton("退出");cancel.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {System.exit(0);}});pane.add(login);pane.add(cancel);return pane;}public void showView() {setVisible(true);}public static void main(String[] args) {LoginFrame lf = new LoginFrame();lf.showView();}}