java银行管理系统前三题

Account//用户类

package entity;import javax.swing.JOptionPane;public class Account {long id;String password;String name;String personId;double balance;public Account() {super();// TODO Auto-generated constructor stub}public Account(long id, String password, String name, String personId,double balance) {super();this.id = id;this.password = password;this.name = name;this.personId = personId;this.balance = balance;}public void deposit(double bal){balance+=bal;}public void withdraw(double bal){if(bal-balance>0)JOptionPane.showMessageDialog(null, "余额不足", null, JOptionPane.ERROR_MESSAGE);else{balance-=bal;}}public long getId() {return id;}public void setId(long id) {this.id = id;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPersonId() {return personId;}public void setPersonId(String personId) {this.personId = personId;}public double getBalance() {return balance;}public void setBalance(double balance) {this.balance = balance;}}

信用账户（可预支10000）

package entity;import javax.swing.JOptionPane;public class CreditAccount extends Account{public CreditAccount() {super();// TODO Auto-generated constructor stub}public CreditAccount(long id, String password, String name,String personId, double balance) {super(id, password, name, personId, balance);// TODO Auto-generated constructor stub}@Overridepublic void withdraw(double bal) {// TODO Auto-generated method stubif(bal-balance>10000){JOptionPane.showMessageDialog(null, "余额不足", null, JOptionPane.ERROR_MESSAGE);return ;}else{balance-=bal;}}}

普通账户

package entity;import javax.swing.JOptionPane;public class SavingAccount extends Account{public SavingAccount() {super();// TODO Auto-generated constructor stub}public SavingAccount(long id, String password, String name,String personId, double balance) {super(id, password, name, personId, balance);// TODO Auto-generated constructor stub}@Overridepublic void withdraw(double bal) {// TODO Auto-generated method stubif(balance<bal){JOptionPane.showMessageDialog(null, "余额不足", null, JOptionPane.ERROR_MESSAGE);return;}else{balance-=bal;}}}

银行

package biz;import java.awt.List;import java.util.LinkedList;import javax.swing.JFrame;import javax.swing.JOptionPane;import entity.Account;public class Bank {LinkedList bank=new LinkedList();//数组这方面不如链表Account acount;int length=0;public Bank() {super();// TODO Auto-generated constructor stub}public void open_acount(long id,String password,String name,String personId,double balance){acount=new Account(id, password, name, personId, balance);bank.add(length,acount);length++;}public Account comein(long id,String password){for(int i=0;i<length;i++){ acount=(Account)bank.get(i); if(acount.getId()==id &&acount.getPassword().equals(password)) return acount;}JOptionPane.showMessageDialog(null, "请检查用户名或密码是否正确", null, JOptionPane.ERROR_MESSAGE);return null;}public void whithin(long id,double balance){for(int i=0;i<length;i++){ acount=(Account)bank.get(i); if(acount.getId()==id){ acount.deposit(balance); bank.set(i, acount);}}}public void whithdraw(long id,double balance){for(int i=0;i<length;i++){ acount=(Account)bank.get(i); if(acount.getId()==id){ acount.withdraw(balance); bank.set(i, acount);}}}public double showbalabce(long id){for(int i=0;i<length;i++){ acount=(Account)bank.get(i); if(acount.getId()==id){ return acount.getBalance();}}return 0;}}

用户测试界面

package view;import java.awt.FlowLayout;import java.awt.HeadlessException;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JTextField;import entity.Account;import biz.Bank;public class TextView extends JFrame implements ActionListener{JLabel Lname,Lid,Lpassword,LpersonId,Lbalance,Linbalance,Loutbalance;JTextField Tname,Tid,Tpassword,TpersonId,Tbalance,Tinbalance,Toutbalance;JPanel Pname,Pid,Ppassword,PpersonId,Pbalance,Pinbalance,Poutbalance;JButton opencount,comein,within,withdraw,showbalance;Bank bank;Account account;public TextView() throws HeadlessException {super();// TODO Auto-generated constructor stubbank=new Bank();Lid =new JLabel("账户号码");Lbalance=new JLabel("账户余额");Linbalance=new JLabel("存款金额");Loutbalance=new JLabel("取款金额");Lname=new JLabel("真实姓名");LpersonId=new JLabel("身份证号码");Lpassword=new JLabel("账户密码");Tbalance=new JTextField(10);Tinbalance=new JTextField(10);Toutbalance=new JTextField(10);//Tbalance.setEditable(false);Tname=new JTextField(10);//Tname.setEditable(false);Tid=new JTextField(10);//Tid.setEditable(false);TpersonId=new JTextField(10);//TpersonId.setEditable(false);Tpassword=new JTextField(10);//Tpassword.setEditable(false);Pname=new JPanel();Pid=new JPanel();Ppassword=new JPanel();PpersonId=new JPanel();Pbalance=new JPanel();Pinbalance=new JPanel();Poutbalance=new JPanel();opencount=new JButton("用户开户");comein=new JButton("用户登录");within=new JButton("用户存款");withdraw=new JButton("用户取款");showbalance=new JButton("查询余额");Pname.add(Lname);Pname.add(Tname);Pbalance.add(Lbalance);Pbalance.add(Tbalance);Pinbalance.add(Linbalance);Pinbalance.add(Tinbalance);Poutbalance.add(Loutbalance);Poutbalance.add(Toutbalance);Pid.add(Lid);Pid.add(Tid);Ppassword.add(Lpassword);Ppassword.add(Tpassword);PpersonId.add(LpersonId);PpersonId.add(TpersonId);add(Pid);add(Ppassword);add(Pname);add(PpersonId);add(Pinbalance);add(Poutbalance);add(Pbalance);add(opencount);add(comein);add(within);add(withdraw);add(showbalance);setLayout(new FlowLayout());setBounds(100, 100, 200,400 );setVisible(true);validate();opencount.addActionListener(this);comein.addActionListener(this);within.addActionListener(this);withdraw.addActionListener(this);showbalance.addActionListener(this);}@Overridepublic void actionPerformed(ActionEvent arg0) {// TODO Auto-generated method stubif(arg0.getSource()==opencount){long id=Long.parseLong(Tid.getText());String password=Tpassword.getText();String name=Tname.getText();String personId=TpersonId.getText();double balance=Double.parseDouble(Tinbalance.getText());bank.open_acount(id, password, name, personId, balance);Tbalance.setText("");Tinbalance.setText("");Toutbalance.setText("");Tname.setText("");Tid.setText("");TpersonId.setText("");Tpassword.setText("");}if(arg0.getSource()==comein){long id=Long.parseLong(Tid.getText());String password=Tpassword.getText();account=new Account();if((account=bank.comein(id, password))!=null){Tname.setText(account.getName());}}if(arg0.getSource()==within){double balance=Double.parseDouble(Tinbalance.getText());long id=Long.parseLong(Tid.getText());bank.whithin(id, balance);Tbalance.setText(bank.showbalabce(id)+"");}if(arg0.getSource()==withdraw){double balance=Double.parseDouble(Toutbalance.getText());long id=Long.parseLong(Tid.getText());bank.whithdraw(id, balance);Tbalance.setText(bank.showbalabce(id)+"");}if(arg0.getSource()==showbalance){long id=Long.parseLong(Tid.getText());bank.showbalabce(id);Tbalance.setText(bank.showbalabce(id)+"");}}}

测试图片

测试主函数

package view;public class TestMain {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubTextView te=new TextView();}}