import java.awt.*;
import java.io.Serializable;
import javax.swing.JFrame;
public class run implements Serializable{
	static String title = "KFC";
	static Beginning begin = new Beginning(title);
	static Order order=new Order(title);
	static JFrame[] frames= {begin,order};
	static saoma sao=new saoma("掃碼支付");					//二維碼窗口
	static Xiadan xiadan=new Xiadan("訂單信息");				//訂單信息窗口
	public static void main(String args[]) throws InterruptedException {

		for (int index = 0; index < frames.length; index++) {
			frames[index].setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
			frames[index].setPreferredSize(new Dimension(1000,900));
      screencentre(frames[index]);

			frames[index].pack();
		}
		frames[0].setVisible(true);

	}
  //使框架顯示在屏幕中央
	public static void screencentre(JFrame frame) {

		Toolkit kit = Toolkit.getDefaultToolkit(); // 定義工具包

		Dimension screenSize = kit.getScreenSize(); // 獲取屏幕的尺寸

		int screenWidth = screenSize.width; // 獲取屏幕的寬

		int screenHeight = screenSize.height; // 獲取屏幕的高

		
		frame.setLocation(screenWidth/4, screenHeight/15);// 設(shè)置窗口居中顯示
	}
}

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Beginning extends JFrame{
	JPanel panel = new JPanel();								
	JLabel title = new JLabel("歡迎光臨KFC",JLabel.CENTER);	//標(biāo)簽組件
	JLabel im = new JLabel(new ImageIcon("images/1.jpg"));	//標(biāo)簽組件
	JButton order=new JButton(new ImageIcon("images/4.png"));	//按鈕組件
	public Beginning(String name)
	{
		super(name);
		setLayout(new GridLayout(4,1));						//設(shè)置布局
		title.setFont(new Font("KFC",Font.BOLD,50) );			//設(shè)置字體
		add(title);												//添加組件
		add(im);
		order.addActionListener(new BeginLis());				//添加監(jiān)聽(tīng)者
		order.setBorderPainted(false);							//去邊界
		JPanel jpanel2=new JPanel();
		jpanel2.setLayout(new GridLayout(1,3));
		jpanel2.add(new JPanel());
		jpanel2.add(order);
		jpanel2.add(new JPanel());
		add(jpanel2);
		//panel.add(title);
		//getContentPane().add(panel);
	}
	private class BeginLis implements ActionListener {
	  public void actionPerformed(ActionEvent e) {
	  	setVisible(false);
    	run.frames[1].setVisible(true);
		}
	}
}

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class saoma extends JFrame{
	JPanel jpanel=new JPanel();
	JButton buttonwancheng=new JButton("支付完成");
	public saoma(String name) {
		super(name);
		JLabel jlabel=new JLabel(new ImageIcon("images/saoma.png"));
		jpanel.add(jlabel);
		this.setSize(700, 700);
		this.setLocation(300, 200);
		this.add(jpanel);
		this.add(buttonwancheng,BorderLayout.SOUTH);

		buttonwancheng.addActionListener(e->{
			run.sao.setVisible(false);
			run.xiadan.setVisible(false);
			run.frames[1].setVisible(false);
			System.exit(-1);
		});
	}
}

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Xianjin extends JFrame{
	JPanel jpanel=new JPanel();

	JLabel jlabel=new JLabel("掏出整錢(qián)");
	JTextField in=new JTextField(20);
	JButton buttonzhifu=new JButton("支付");
	public Xianjin(String name) {
		super(name);
		this.setLayout(new GridLayout(2,1));
		this.setSize(700, 450);
		this.setLocation(300, 200);
		this.setVisible(true);
		this.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
		JTextArea show=new JTextArea(24,20);
		JScrollPane scrollpane=new JScrollPane(show);
		show.setEditable(false);
		show.append("您需要支付"+run.order.client1.num+"元"+'\n'+"請(qǐng)?jiān)谙路捷斎肟蜉斎虢疱X(qián)進(jìn)行支付以及找零:\n");
		this.add(scrollpane);
		jpanel.add(jlabel);
		jpanel.add(in);
		jpanel.add(buttonzhifu);
		this.add(jpanel);
		buttonzhifu.addActionListener(e->{
			String content=in.getText();
			float jinqian=Integer.parseInt(content);
			float zhaoling=jinqian-run.order.client1.num;
			if(jinqian<run.order.client1.num)
			{
				show.append("您給的錢(qián)不夠支付，請(qǐng)重新支付\n");
			}
			else
				show.append("您支付了"+jinqian+"元，找您"+zhaoling+"元\n"+"本次訂單完成\n");
			in.setText("");
		});
	}
}

 import java.awt.*;
  import java.awt.event.*;
  import javax.swing.*;
  public class Xiadan extends JFrame{
  	JButton buttonxianjinzhifu=new JButton(new ImageIcon("images/xianjinzhifu.png"));
  	JButton buttonzhifubaosaoma=new JButton(new ImageIcon("images/zhifubaosaoma.png"));
  	JTextArea show=new JTextArea(24,20);
  	public Xiadan(String name)
  	{
  		super(name);
  
  		}
  	public void s() {
  		this.setLayout(new GridLayout(2,1));
  		this.setSize(700, 450);
  		this.setLocation(300, 200);
  
  		this.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
  	
  		JScrollPane scrollpane=new JScrollPane(show);
  		show.setEditable(false);
}