简单atm自动取款机

package bank; import java.awt.*; import java.awt.event.*; import java.sql.ResultSet; import javax.swing.*; class Getrmb extends JFrame { private JButton r100,r200,r500,r1000,clear,exit,ok; private JLabel bac,account,warning; private JTextField tx; private JPasswordField pwd; private DataBaseManager mydb; private ResultSet rs; private ImageIcon img; private Icon imgIcon; private int num; private String upd; Mainf ma; Getrmb(String s) { super(s); Container con=this.getContentPane(); con.setLayout(null); img=new ImageIcon("pic/gsyh.jpg"); imgIcon=img; bac=new JLabel(imgIcon); account=new JLabel("请输入金额："); warning=new JLabel(""); ok=new JButton("确定"); tx=new JTextField("",20); r100=new JButton("100 元"); r200=new JButton("200 元"); r500=new JButton("500 元"); r1000=new JButton("1000元"); clear=new JButton("清除"); exit=new JButton("返回"); GraphicsEnvironment ge=GraphicsEnvironment.getLocalGraphicsEnvironment(); Font g=new Font("隶书",Font.BOLD,20); tx.setFont(g); account.setFont(g); warning.setFont(g); r100.setFont(g); r200.setFont(g); r500.setFont(g); r1000.setFont(g); exit.setFont(g); clear.setFont(g); ok.setFont(g); r100.setBounds(490,150,150,30); r200.setBounds(490,200,150,30); r500.setBounds(490,250,150,30); r1000.setBounds(490,300,150,30); exit.setBounds(0,300,150,30); account.setBounds(180,230,150,20); tx.setBounds(320,230,100,30); ok.setBounds(0,150,150,30); clear.setBounds(0,200,150,30); warning.setBounds(180,200,300,20); //警告标签 bac.setBounds(0,0,640,480); con.add(r100); con.add(r200); con.add(r500); con.add(r1000); con.add(clear); con.add(exit); con.add(account); con.add(tx); con.add(ok); con.add(warning); con.add(bac); tx.addActionListener(new ActionListener() //文本框回车监视器 { public void actionPerformed(ActionEvent e) { num=Integer.parseInt(tx.getText()); if(num>3000&&num%50==0&&num>0) { warning.setText("当天金额输出不得大于3000元！"); } else if(num%50!=0&&num>0) { warning.setText("请输入50的整数倍"); } else if(num<=3000&&num%50==0&&num>0) { mydb=DataBaseManager.getInstance(); upd=mydb.getdateSql("UPDATE users SET submoney=submoney-'"+tx.getText()+"' WHERE account like '"+Login.tx1.getText()+"'"); JOptionPane.showMessageDialog(null,"取款成功！"); } } }); clear.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { tx.setText(null); warning.setText(null); } }); exit.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { setVisible(false); new Mainf("主界面"); } }); r100.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { mydb=DataBaseManager.getInstance(); upd=mydb.getdateSql("UPDATE users SET submoney=submoney-100 WHERE account like '"+Login.tx1.getText()+"'"); JOptionPane.showMessageDialog(null,"取款成功！"); } }); r200.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { mydb=DataBaseManager.getInstance(); upd=mydb.getdateSql("UPDATE users SET submoney=submoney-200 WHERE account like '"+Login.tx1.getText()+"'"); JOptionPane.showMessageDialog(null,"取款成功！"); } }); r500.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { mydb=DataBaseManager.getInstance(); upd=mydb.getdateSql("UPDATE users SET submoney=submoney-500 WHERE account like '"+Login.tx1.getText()+"'"); JOptionPane.showMessageDialog(null,"取款成功！"); } }); r1000.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { mydb=DataBaseManager.getInstance(); upd=mydb.getdateSql("UPDATE users SET submoney=submoney-1000 WHERE account like '"+Login.tx1.getText()+"'"); JOptionPane.showMessageDialog(null,"取款成功！"); } }); ok.addActionListener(new ActionListener() //按钮 确定 监视器 { public void actionPerformed(ActionEvent e) { num=Integer.parseInt(tx.getText()); if(num>3000&&num%50==0&&num>0) { warning.setText("当天金额输出不得大于3000元！"); } else if(num%50!=0&&num>0) { warning.setText("请输入50的整数倍"); } else if(num<=3000&&num%50==0&&num>0) { mydb=DataBaseManager.getInstance(); upd=mydb.getdateSql("UPDATE users SET submoney=submoney-'"+tx.getText()+"' WHERE account like '"+Login.tx1.getText()+"'"); JOptionPane.showMessageDialog(null,"取款成功！"); } } }); setUndecorated(true); setBounds(192,144,640,480); setResizable(false); setVisible(true); validate(); } } public class Rmb { public static void main(String[] args) { Getrmb rmb=new Getrmb("人民币界面"); } }