java课程设计源程序

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1、packagejavabigwork;importjavaxeswing・*;importjava.awt.*;importjava.awt.event•*;importjava.sq1・*;publicclassLoginFrmextendsJFrameimplementsActionListener{privateDLabellblTitle=new3Label(H欢迎进入家庭财务管理系统”);privateDLabellblName=newDLabel("用户名”)；privateDLabellbl

2、Pwd=new3Label("密码”)；privateDTextFieldtxtName二new3TextField();privateDPasswordFieldtxtPwd=new3PasswordField();private^ButtonbtnOk=newJButton("用户登陆”)；private^ButtonbtnCancel=newJButton(H退出系统”)；privateStringdriver=nsun・jdbc.odbc.DdbcOdbcDriver'1;privateStrin

3、gurl="jdbc:odbc:mydbH;privateintrowcount=0;publicLoginFrm(){DPaneljp=(JPanel)thiSegetContentPane();jp.setLayout(null);jp.add(lblTitle);lblTitle.setBounds(300?50,200,50);jp.add(lblName);lblName.setBound$(200^100^100,20);jp.add(txtName);txtName.setBound$(50

4、0^100，100^20);jp.add(lblPwd);lblPwd.setBounds(200150,100,20);jp.add(txtPwd);txtPwd.setBounds(500^150^100^20);jp.add(btnOk);btnOk.setBounds(200^220,100^20);jp.add(btnCancel);btnCancel•setBounds(500>220，100^20);this・setTitle(M家庭用户登陆”);this.setSize(800400);t

5、his・setVisible(true);this・setDefaultCloseOperation(EXI7^OA/_CLOSE);btnOk.addActionListener(this);btnCancel.addActionListener(this);}publicvoidactionPerformed(ActionEvente){if(e.getSource()==btnOk){String[][]rows=this>queryCustome「s();Stringsl=txtName.getT

6、ext();Strings2=txtPwd.getText();for(inti=0;ishok/AfessageDiatog(this>”用户名和密码止确“)；newCustomerFrm();}elseJOptionPane.sho^MessageDiaLog(this,"用户名或密码错误“)；}}}if(e・getSource()==btnCa

7、ncel){System.exit(0);}}publicString[][]queryCustomers(){String[][]rows=null;try{Class.forName(drix/er);Connectioncon=DriverManager.getCo门门ectio门(url);Statementcmd=con.createstatement();Stringsql="selectcount(*)fromadmin";ResultSetrs=cmd.executeQue“y(sql);

8、rs.next();rowcount=rs.getint⑴；rows=newString[rowcount][2];sql=Hselect*fromadmin”；rs=cmd•executeQuery(sql);rowcount=0;while(rs>next()){for(inti=1;i<=2;i++)rows[rowcount][i-1]=rs.getString(i);rowcount++;}con.close();}