java开发图书管理系统,用文件存储数据

一：注册界面及代码：/***BigHomeworkcs2011z.libraryRegisteFrame.javaRegisteFrame2013-11-136:39:12*/packagecs2011z.library;/***@authorAdministrator**/importjava.awt.Dimension;importjava.awt.GridLayout;importjava.awt.Toolkit;importjava.awt.event.ActionEvent;importjava.awt.event.ActionListener;importjava.util.Vector;importjavax.swing.JButton;importjavax.swing.JFrame;importjavax.swing.JLabel;importjavax.swing.JOptionPane;importjavax.swing.JPanel;importjavax.swing.JPasswordField;importjavax.swing.JTextField;importjavax.swing.border.BevelBorder;importjavax.swing.border.CompoundBorder;/**@authorAdministratorRegisteFrame*/publicclassRegisteFrameextendsJFrame{/**注册界面*/privatestaticfinallongserialVersionUID=1L;//控件显示文件信息finalStringUSERNAME="用户名:";finalStringPASSWORD="密码:";finalStringPASSWORDOK="确认密码:";finalStringCOMMIT="提交";finalStringCANCEL="取消";finalStringNULL="";//网格布局行、列finalintROW=4;//行finalintCOL=2;//列//窗体控件定义privateJLabellblUserName;//此标签用于显示"用户名"privateJLabellblPassword;//此标签用于显示"密码"privateJLabellblPasswordOK;//此标签用于显示"确认密码"privateJTextFieldtxtUserName;//此文本框用于用户输入注册的用户名privateJPasswordFieldtxtPassword;//此密码框用于用户输入注册密码privateJPasswordFieldtxtPasswordOK;//此密码框用于用户输入确认密码privateJButtonbtnCommit;//按钮用于提交注册信息privateJButtonbtnCancel;//按钮用于取消//用户列表publicVector<User>stVector=newVector<User>();//窗体高宽设定finalintWIDTH=600;finalintHEIGHT=400;//RegisteFrame@SuppressWarnings("unchecked")publicRegisteFrame(Objectobj,Stringtitle){super(title);//设置窗体标题stVector=(Vector<User>)obj;//userVec窗体显示大小设置setVisible(true);setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);//窗体关闭DimensionscreenSize=Toolkit.getDefaultToolkit().getScreenSize();DimensionframeSize=this.getSize();this.setLocation((screenSize.width-frameSize.width)/2,(screenSize.height-frameSize.height)/2);init();//初始化}publicvoidinit(){//网格布局：3×2getContentPane().setLayout(newGridLayout(ROW,COL));//创建相应的控件lblUserName=newJLabel(USERNAME);txtUserName=newJTextField();lblPassword=newJLabel(PASSWORD);txtPassword=newJPasswordField();lblPasswordOK=newJLabel(PASSWORDOK);txtPasswordOK=newJPasswordField();btnCommit =newJButton(COMMIT);btnCancel =newJButton(CANCEL);//设置控件属性lblUserName.setBorder(newCompoundBorder(null,newBevelBorder(BevelBorder.RAISED)));//显示"用户名："标签边框设置txtUserName.setBorder(newBevelBorder(BevelBorder.LOWERED));//用户名文本本框边框lblPassword.setBorder(newCompoundBorder(null,newBevelBorder(BevelBorder.RAISED)));//显示"口令："标签边框设置txtPassword.setBorder(newBevelBorder(BevelBorder.LOWERED));//密码框边框lblPasswordOK.setHorizontalAlignment(0);//"确认密码"居中显示lblPasswordOK.setBorder(newCompoundBorder(null,newBevelBorder(BevelBorder.RAISED)));//显示"确认密码："标签边框设置txtPasswordOK.setBorder(newBevelBorder(BevelBorder.LOWERED));//确认密码框边框//增加监听器//确定按钮btnCommit.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){Stringusername=txtUserName.getText().trim();//取得用户输入用户名Stringpassword=newString(txtPassword.getPassword()).trim();//取得户输入的密码StringpasswordOK=newString(txtPasswordOK.getPassword()).trim();booleanflag=true;charuserName[]=username.toCharArray();for(charch:userName){if(ch>='A'&&ch<='Z'||ch>='a'&&ch<='z'||ch>='0'&&ch<='9')flag=true;elseflag=false;}if(flag){if(pareTo(passwordOK)!=0){//注册失败JOptionPane.showMessageDialog(null,"两次密码不全都！","注册失败",JOptionPane.INFORMATION_MESSAGE);}else{UseruserRegiste=newUser(username,password);//创建一个用户对象stVector.add(userRegiste);//obj.add();//注册成功JOptionPane.showMessageDialog(null,密码："+password,"注册