java ATM取款机

import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.event.*; public class Atm extends JFrame implements ActionListener{ JFrame frame; JPanel p1,p2,p3,p4,p5; JLabel l2,l3; JButton[] b = new JButton[8]; String s[]={"查　　询","取　　款","存　　款","转　　账","注销帐户","返　　回","退　　出","修改密码"}; int i; int money = 50000; public Atm() { frame=new JFrame("我的Atm机"); frame.setSize(400,300); p1=new JPanel(); p2=new JPanel(); p3=new JPanel(); p4=new JPanel(); p5=new JPanel(); l3=new JLabel(); l3.setIcon(new ImageIcon("1.gif")); p5.add(l3); l2=new JLabel(); l2.setIcon(new ImageIcon("123.jpg")); p4.add(l2); p2.setLayout(new BorderLayout()); for ( i = 0; i <8; i++) { b[i] = new JButton(s[i]); } for(i=0;i<4;i++){ p1.add(b[i]);} for(i=4;i<8;i++){ p3.add(b[i]);} for(i=0;i<8;i++){ b[i].addActionListener(this);} //添加监听器 p1.setLayout(new GridLayout(4,1,0,10)); p3.setLayout(new GridLayout(4,1,0,10)); frame.setLayout(new BorderLayout()); frame.getContentPane().add(p1,BorderLayout.WEST); //西 frame.getContentPane().add(p2,BorderLayout.CENTER); //中 frame.getContentPane().add(p3,BorderLayout.EAST); //东 frame.getContentPane().add(p4,BorderLayout.SOUTH); //南 frame.getContentPane().add(p5,BorderLayout.NORTH); //北 frame.pack(); frame.show(); frame.setVisible(true); frame.setResizable(false);//不可放大 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } public void actionPerformed(ActionEvent e){ JButton jb = (JButton)e.getSource(); JPanel p5=new JPanel(); JLabel l4=new JLabel(); p5.add(l4); p2.add(p5); if(jb==b[6]) //退出 { System.exit(0);} else if(jb==b[5]){ //返回 Atms Atms=new Atms(); //跳转到登录界面 frame.setVisible(false); } else if(jb==b[3]){ //转账 frame.setVisible(false); String zh = JOptionPane.showInputDialog(null, "请输入账号:"); String is = JOptionPane.showInputDialog(null, "请输入金额:"); if(is != null && is.matches("\\d+")) { int input = Integer.parseInt(is); money += input; l4.setText("你已成功转账" + input + "元到"+zh+"账号"); frame.setVisible(true); } } else if(jb==b[2]){ //存款 frame.setVisible(false); String is = JOptionPane.showInputDialog(null, "输入存款额:"); if(is != null && is.matches("\\d+")) { int input = Integer.parseInt(is); money += input; l4.setText("你已经存入" + input + "元"); frame.setVisible(true); } } else if(jb==b[1]){ //取款 frame.setVisible(false); String is = JOptionPane.showInputDialog(null, "输入取款额:"); int input = Integer.parseInt(is); if((input%100)!= 0 && input<=10000) { input = input >= money ? money : input; money -= input; l4.setText("你已经取走" + input + "元"); frame.setVisible(true); } else l4.setText("您的当前余额不足!"); } else if(jb==b[0]){ //查询 JOptionPane.showMessageDialog(null, "当前余额是: " + money); l4.setText("当前余额: " + money); } else if(jb==b[8]){ //修改密码 frame.setVisible(false); String is = JOptionPane.showInputDialog(null, "新密码:"); frame.setVisible(true); } } public static void main (String[] args) { new Atm(); } }