Java代码

import java.awt.event.*;

import java.awt.*;

import javax.swing.*;

import java.awt.FlowLayout;

public class bankJFrame extends JFrame implements ActionListener{

private JTextField text_zhanghao,text_kahao;//定义账号,卡号文本行

private JButton button_cunkuan,button_qukuan,button_yue,button_lixi;//定义存款,取款,查询余额按钮

private double balance;//成员变量--查看余额

private double rlixi;

public bankJFrame()

{

super("银行存取款管理系统");//主窗口标题

this.setBounds(300, 240, 400, 150);//窗口初弹出坐标及大小

this.setResizable(false);//窗口大小不能改变

this.setBackground(Color.lightGray);//颜色设置

this.setLayout(new java.awt.FlowLayout(FlowLayout.CENTER));//面板布局为居中this.setDefaultCloseOperation(EXIT_ON_CLOSE);

JPanel panel1=new JPanel();//新建第一个面板

this.getContentPane().add(panel1,"North");

panel1.add(new JLabel("账户"));

text_zhanghao=new JTextField("zj",6);

text_zhanghao.setEditable(false);//文本行不可编辑

panel1.add(text_zhanghao);

panel1.add(new JLabel("卡号"));//用户卡号标签及文本行

text_kahao=new JTextField("622627************",15);

text_kahao.setEditable(false);//文本行不可编辑

panel1.add(text_kahao);

this.setVisible(true);//窗口可见

JPanel panel2=new JPanel();

this.getContentPane().add(panel2,"South");//面板布局及添加面板至主面板

button_cunkuan=new JButton("存款");//存款按钮

panel2.add(button_cunkuan);

button_cunkuan.addActionListener(this);

button_qukuan=new JButton("取款");//取款按钮

panel2.add(button_qukuan);

button_qukuan.addActionListener(this);

button_yue=new JButton("查询当前余额");//查询当前余额按钮

panel2.add(button_yue);

button_yue.addActionListener(this);

button_lixi=new JButton("当前利息");//当前利息按钮

panel2.add(button_lixi);

button_lixi.addActionListener(this);

this.setVisible(true);

}

public class MessageJDialog extends JFrame implements ActionListener {

JTextField text_cunkuanshu,text_huoqi;//存款数与活期存款年份的输入JLabel jlabel_huoqi,jlabel_dingqi;//活期期限标签,定期期限标签

JButton button_queding;//确定按钮

JRadioButton radio_dingqi,radio_huoqi;//活、定期单选框

JComboBox box_dingqi;//定期年份组合框

double dnianfeng;//内部成员变量定期年份的声明

MessageJDialog(String dingqis[])

{

super("提示");

this.setBounds(350,290,300,220);

JPanel panel1=new JPanel();

panel1.add(new JLabel("请输入存款数(元):"));

panel1.add(text_cunkuanshu=new JTextField("100",6));

text_cunkuanshu.addActionListener(this);

this.getContentPane().add(panel1);

JPanel panel_rb=new JPanel(new GridLayout(1,2));

panel1.add(panel_rb);

this.setVisible(true);

ButtonGroup bgroup=new ButtonGroup();

radio_dingqi=new JRadioButton("定期存款");

bgroup.add(radio_dingqi);

panel_rb.add(radio_dingqi);

radio_dingqi.addActionListener(this);

radio_huoqi=new JRadioButton("活期存款");

bgroup.add(radio_huoqi);

panel_rb.add(radio_huoqi);

this.setVisible(true);

radio_huoqi.addActionListener(this);

JPanel panel_rm=new JPanel();

panel1.add(panel_rm);

panel_rm.add(jlabel_dingqi=new JLabel("请选择定期期限(年)")); box_dingqi=new JComboBox(dingqis);

box_dingqi.setEditable(true);

box_dingqi.addActionListener(this);

panel_rm.add(box_dingqi);

this.setVisible(true);

JPanel panel_rn=new JPanel();

panel1.add(panel_rn);

panel_rn.add(jlabel_huoqi=new JLabel("请输入活期期限(年):")); panel_rn.add(text_huoqi=new JTextField("1",7));

button_queding=new JButton("确定");

panel1.add(button_queding);

this.setVisible(true);

button_queding.addActionListener(this);//注册文本编辑事件监听器

}

public String str()//成员方法:获取文本框输入存款数字符串

{

String str=text_cunkuanshu.getText();

return str;

}

public double dlixi()//成员方法:计算定期利息

{

double a=balance;

double c=dnianfeng;

switch((int)(c*4)){

case 1: return(a*0.0248*c);

case 2: return(a*0.0264*c);

case 4: return(a*0.028*c);

case 8: return(a*0.0352*c);

case 12: return(a*0.04*c);

case 20: return(a*0.044*c);

default: return 0;

}

}

public double hlixi()//成员方法:计算活期利息方法

{

double hnianfeng=Double.parseDouble((text_huoqi.getText()));

double a=balance;

double c=hnianfeng;

double s=a*0.004*c;

return s;

}

public void actionPerformed(ActionEvent e)//内部对话框类单击事件处理方法

{

if(radio_dingqi.isSelected())//定期单选框选中

{

text_huoqi.setVisible(false);

jlabel_huoqi.setVisible(false);

jlabel_dingqi.setVisible(true);

box_dingqi.setVisible(true);

rlixi=dlixi();

}

else if(radio_huoqi.isSelected())//活期单选框选中

{

jlabel_dingqi.setVisible(false);

box_dingqi.setVisible(false);

text_huoqi.setVisible(true);

jlabel_huoqi.setVisible(true);

rlixi=hlixi();

}

if(e.getSource()==button_queding)//单击确定按钮

{

double cunkuanzhi=Integer.parseInt(text_cunkuanshu.getText());//存款数文本框字符串强制转换双精度型

if (cunkuanzhi>0)//存款操作

{

balance+=cunkuanzhi; //存款操作使余额值增加

}

JOptionPane.showMessageDialog(this,"存款"+cunkuanzhi+"成功! ");

if(radio_dingqi.isSelected())//定、活期单选框利息计算传送

rlixi=dlixi();

if(radio_huoqi.isSelected())

rlixi=hlixi();

}

if(e.getSource()==box_dingqi)//定期组合框的选择

{

String nianfeng=(String) box_dingqi.getSelectedItem();

dnianfeng=Double.parseDouble(nianfeng);

}

}

}

public double get() //取款操作,参数为取款金额,返回实际取到金额

{

String password=JOptionPane.showInputDialog(this,"请输入取款数");

double qukuanzhi=Integer.parseInt(password);

if (qukuanzhi>0)

{

if (qukuanzhi<=this.balance)

this.balance-= qukuanzhi; //取款操作使余额值减少else //账户余额不够所取时

{

qukuanzhi = this.balance+rlixi; //取走全部余额

this.balance = 0;

JOptionPane.showMessageDialog(this,"您的余额不足,已为您取出全部余额!");

}

return qukuanzhi; //返回实际取款额}

return 0;

}

public double balance() //查看账户余额

{

return balance+rlixi;

}

public void actionPerformed(ActionEvent e)//单击事件处理方法

{

if(e.getSource()==button_cunkuan)//单击存款按钮

{

String dingqis[]={"0.25","0.5","1","2","3","5"};//组合框内容数组

new MessageJDialog(dingqis);//新建MessageJDialog类对象

}

if(e.getSource()==button_yue)//单击查询余额按钮

{

double relixi=balance();

JOptionPane.showMessageDialog(this,"尊敬的zj先生,您的当前账户余额为:"+(relixi)+"元");

}

if(e.getSource()==button_qukuan)//单击取款按钮

{

double qk=get();

JOptionPane.showMessageDialog(this,"取款"+qk+"元成功!");

}

if(e.getSource()==button_lixi)//单击计算利息按钮

{

JOptionPane.showMessageDialog(this,"尊敬的zj先生,您的当前账户利息为:"+rlixi+"元");

}

}

public static void main(String args[])//框架bankJFrame主函数

{

new bankJFrame();

}

}