Java实现自动售货机程序

import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.border.*; public class SaleGUI extends JFrame { private JPanel p1 = null; //放置标签及输入框 private JPanel p2 = null; //放置3个按钮 private JPanel p3 = null; //放置1个标签提示“取走饮料” private JTextField jtf = null; //输入硬币数 private JLabel jlb = null; //remind people to input input the money private JLabel jlb1 = null; //提示“取走饮料” private JButton jbtOrange = null; private JButton jbtBeer = null; private JButton jbtCoffee = null; private int OrangeNum = 3; //记录橙汁的存货量 private int BeerNum = 3; //记录啤酒的存货量 private int CoffeeNum = 0; //记录咖啡的存货量 private int coin50 = 5; //记录售货机的50分硬币数目 private int coin100 = 3; //记录售货机的100分硬币数目 public SaleGUI(){ //create a line border Border lineBorder = new LineBorder(Color.GRAY,2); //create a panel to hold a text field p1 = new JPanel(new BorderLayout()); jlb = new JLabel("投币口："); jtf = new JTextField(5); //set default value of text field jtf.setText("0"); //register action listener for JTextField jtf.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e) { jtf.requestFocusInWindow(); } }); //set line border for panel p1 p1.setBorder(lineBorder); //add text field into panel p1 p1.add(jlb,BorderLayout.WEST); p1.add(jtf,BorderLayout.CENTER); //panel p2 holds three buttons p2 = new JPanel(new GridLayout(1,3)); ImageIcon image1 = new ImageIcon("d:\\yiyu\\workspace\\SaleMachine\\src\\gui.icon\\orange.jpg") ; ImageIcon image2 = new ImageIcon("d:\\yiyu\\workspace\\SaleMachine\\src\\gui.icon\\beer.jpeg"); ImageIcon image3 = new ImageIcon("d:\\yiyu\\workspace\\SaleMachine\\src\\gui.icon\\coffee.jpeg"); //设置图片尺寸 jbtOrange = new JButton("Orange juice :50 cent",image1); jbtBeer = new JButton("Beer :50 cent",image2); jbtCoffee = new JButton("Coffee :100 cent",image3); //register action listener jbtOrange.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e){ String str = null; //获取用户投进的硬币 String s = jtf.getText(); int money = Integer.parseInt(s); if( money > 0 && checkCoin(money) ) {//已投币 /*判断投入的是5角还是1元硬币*/ str = alternativeBuyOrange(money); if(str.equals("可以售出")) {//投入硬币币种正确，进行售出 SaleMachine client = new SaleMachine(); String back = client.buy("Orange", money); /*修改售货机内的硬币数以及饮料库存量*/ if(back.equals("请取走饮料!")) { /*投入的币种是5角，售货机中5角硬币数量加1*/ setCoin50(getCoin50() + 1); /*修改饮料库存*/ setOrangeNum(getOrangeNum() - 1); } else { /*投入的币种是1元，售货机中5角硬币数量减1，1元硬币数量加1*/ setCoin50(getCoin50() - 1); setCoin100(getCoin100() + 1); /*修改饮料库存*/ setOrangeNum(getOrangeNum() - 1); } jlb1.setText(back); //提示客户购买信息 } else jlb1.setText(str); //饮料已售完或暂时不能找钱，需要提示客户 } else jlb1.setText("请先投币，售货机支持5角或1元的硬币！"); } }); jbtBeer.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e){ String str = null; //获取用户投进的硬币 String s = jtf.getText(); int money = Integer.parseInt(s); if( money > 0 && checkCoin(money) ) {//已投币 str = alternativeBuyBeer(money); //判断投入的是5角还是1元硬币 if(str.equals("可以售出")) {//投入硬币币种正确，进行售出 SaleMachine client = new SaleMachine(); String back = client.buy("Beer", money); /*修改售货机内的硬币数以及饮料库存量*/ if(back.equals("请取走饮料!")) { /*投入的币种是5角，售货机中5角硬币数量加1*/ setCoin50(getCoin50() + 1); /*修改饮料库存*/ setBeerNum(getBeerNum() - 1); } else { /*投入的币种是1元，售货机中5角硬币数量减1，1元硬币数量加1*/ setCoin50(getCoin50() - 1); setCoin100(getCoin100() + 1); /*修改饮料库存*/ setBeerNum(getBeerNum() - 1); } jlb1.setText(back); //提示客户购买信息 } else jlb1.setText(str); //饮料已售完或暂时不能找钱，需要提示客户 } else jlb1.setText("请先投币，售货机支持5角或1元的硬币！"); } }); jbtCoffee.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e){ String str = null; //获取用户投进的硬币 String s = jtf.getText(); int money = Integer.parseInt(s); if( money > 0 && checkCoin(money) ) {//已投币 str = alternativeBuyCoffee(money); if(str.equals("可以售出")) { SaleMachine client = new SaleMachine(); String back = client.buy("Coffee", money); /*修改售货机内的硬币数以及饮料库存量*/ setCoin100(getCoin100() + 1); /*修改饮料库存*/ setCoffeeNum(getCoffeeNum() - 1); jlb1.setText(back); } else jlb1.setText(str); } else jlb1.setText("请先投币，售货机支持5角或1元的硬币！"); } }); //set background of buttons jbtOrange.setBackground(Color.WHITE); jbtBeer.setBackground(Color.WHITE); jbtCoffee.setBackground(Color.WHITE); //set the button text location jbtOrange.setHorizontalTextPosition(SwingConstants.CENTER); jbtBeer.setHorizontalTextPosition(SwingConstants.CENTER); jbtCoffee.setHorizontalTextPosition(SwingConstants.CENTER); jbtOrange.setVerticalTextPosition(SwingConstants.BOTTOM); jbtBeer.setVerticalTextPosition(SwingConstants.BOTTOM); jbtCoffee.setVerticalTextPosition(SwingConstants.BOTTOM); //set tool tip text on buttons jbtOrange.setToolTipText("Click here to choose Orange!"); jbtBeer.setToolTipText("Click here to choose Beer!"); jbtCoffee.setToolTipText("Click here to choose Coofee!"); //create font object // Font font = new Font("Times New Roman",Font.BOLD,16); // //set font on buttons // jbtOrange.setFont(font); // jbtBeer.setFont(font); // jbtCoffee.setFont(font); //set line border for panel p2 p2.setBorder(lineBorder); //add these buttons into panel p2 p2.add(jbtOrange); p2.add(jbtBeer); p2.add(jbtCoffee); //create panel p3 to hold a label p3 = new JPanel(); jlb1 = new JLabel(); //set line border for panel p3 p3.setBorder(lineBorder); p3.add(jlb1); //add panels into the frame BorderLayout layout = new BorderLayout(); layout.setVgap(5); setLayout(layout); add(p1,BorderLayout.NORTH); add(p2,BorderLayout.CENTER); add(p3,BorderLayout.SOUTH); } /* * checkCoin()验证硬币是否50分或100分 * */ public static boolean checkCoin(int money){ switch(money) { case 50: case 100: return true; default: return false; } } /* * * */ public String alternativeBuyOrange(int money){ String s = null; switch(money){ case 50:{ if(getOrangeNum() != 0){//有存货量，可以实现购买 s = "可以售出"; break; } } case 100:{ if(getOrangeNum() != 0 ){ if(getCoin50() > 0) {//有存货量，可以实现购买 s = "可以售出"; } else s = "对不起，目前不能找钱，请投5角硬币!"; } else s = "目前该饮料已经售完!"; } break; } return s.toString(); } public String alternativeBuyBeer(int money){ String s = null; switch(money){ case 50:{ if(getBeerNum() != 0){//有存货量，可以实现购买 s = "可以售出"; break; } } case 100:{ if(getBeerNum() != 0 ){ if(getCoin50() > 0) {//有存货量，可以实现购买 s = "可以售出";