//設計登陸視窗界面

//設計登陸視窗界面
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class jiemianjishijian extends JFrame implements ActionListener {
	JLabel lzc, ltx, lbconfirm;
	// 聲明帳号、密碼、确認标簽元件
	JPasswordField pf;// 聲明輸入密碼框元件
	JTextField tfzh;
	// 聲明輸入帳号文本框元件
	JButton btLogin;// 聲明登陸按鈕元件
	String zhanghao;// 聲明變量賬号
	String mima;// 聲明變量密碼

	jiemianjishijian() {
		JFrame jf = new JFrame("登陸視窗");
		jf.setVisible(true); // 設定窗體可見
		jf.setSize(400, 200);// 設定視窗初顯大小
		jf.setLocationRelativeTo(null);

		JPanel jp = new JPanel();
		jp.setLayout(new BorderLayout(5, 5));// 構造一個邊界布局

		JPanel jpTop = new JPanel();
		jpTop.setLayout(new GridLayout(2, 2, 5, 5));

		JPanel jpInfo = new JPanel();
		jpInfo.setLayout(new FlowLayout());

		JPanel jpbtLogin = new JPanel();
		jpbtLogin.setLayout(new FlowLayout());

		lzc = new JLabel("帳号", lzc.CENTER);// 建立元件并指派
		ltx = new JLabel("密碼", ltx.CENTER);
		lbconfirm = new JLabel(" ");

		tfzh = new JTextField(15);
		pf = new JPasswordField(15);

		btLogin = new JButton("登陸");
		btLogin.addActionListener(this);

		jpTop.add(lzc);// 把元件添加到面闆上
		jpTop.add(tfzh);
		jpTop.add(ltx);
		jpTop.add(pf);
		jpInfo.add(lbconfirm);
		jpbtLogin.add(btLogin);
		jp.add(jpTop, BorderLayout.NORTH);
		jp.add(jpInfo, BorderLayout.CENTER);
		jp.add(jpbtLogin, BorderLayout.SOUTH);

		jf.add(jp);

	}

	public void actionPerformed(ActionEvent e) {
		zhanghao = tfzh.getText();
		mima = pf.getText();

		if (zhanghao.equals("lvtongxue") && mima.equals("5824634"))
			lbconfirm.setText("登入成功");
		else
			lbconfirm.setText("帳号或密碼有誤，請重新輸入");
	}

	public static void main(String[] args) {
		new jiemianjishijian();
	}

}