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();
	}
}