Develop an Enterprise Java Bean for Banking Operations
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- Karin Copeland
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1 Develop an Enterprise Java Bean for Banking Operations Aim: Develop a Banking application using EJB3.0 Software and Resources: Software or Resource Version Required NetBeans IDE 6.7, Java version Java Development Kit (JDK) version 6 or version 5 GlassFish application server V2 Code Session Bean package Stateless; import java.sql.connection; import java.sql.drivermanager; import java.sql.preparedstatement; import java.sql.resultset; import java.sql.statement; import java.util.arraylist; import java.util.list; import javax.ejb.stateless; * public class NewSessionBean implements NewSessionBeanRemote
2 String driver="sun.jdbc.odbc.jdbcodbcdriver"; String Url="jdbc:odbc:BankApp"; Connection con=null; List cust=new public ArrayList ListUser() try Class.forName(driver); con=drivermanager.getconnection(url); Statement st=con.createstatement(); ResultSet rs=st.executequery("select * from BankCust"); while (rs.next()) cust.add(rs.getstring("custcode")); cust.add(rs.getstring("custname")); cust.add(rs.getstring("custaddress")); cust.add(rs.getint("custmobile")); con.close(); catch(exception e) e.printstacktrace();
3 return (ArrayList) cust; public int deposit(string cc,float depamount) int i=0; try Class.forName(driver); Connection con=drivermanager.getconnection(url); PreparedStatement pst=con.preparecall("select * from TransactionTab where CustCode=?"); pst.setstring(1, cc); ResultSet rs1=pst.executequery(); rs1.next(); float eamt=rs1.getfloat("currentbal"); float newbal=eamt+depamount; //System.out.print(newbal); pst=con.preparestatement("update TransactionTab set CurrentBal=? where CustCode=?"); pst.setfloat(1, newbal); pst.setstring(2, cc); i=pst.executeupdate(); //System.out.println(i); con.commit(); con.close(); catch(exception e)
4 e.printstacktrace(); return i; public String withdraw(string cc,float withamount) String str=null; int i=0; try Class.forName(driver); Connection con=drivermanager.getconnection(url); PreparedStatement pst=con.preparecall("select * from TransactionTab where CustCode=?"); pst.setstring(1, cc); ResultSet rs1=pst.executequery(); rs1.next(); float eamt=rs1.getfloat("currentbal"); if ((eamt-500)>=withamount) float newbal=eamt-withamount; System.out.println(newbal); pst=con.preparestatement("update TransactionTab set CurrentBal=? where CustCode=?"); pst.setfloat(1, newbal); pst.setstring(2, cc); i=pst.executeupdate();
5 if(i!=0) str="transaction Success, Withdraw Amount="+withamount+"Remaining Balance="+newbal; else str="transction Failure"; con.commit(); else str="insufficient Amount, Transaction Cancelled, Check Your Balance before Transaction"; //System.out.print(newbal); con.close(); catch(exception e) e.printstacktrace(); return str; Remote Interface package Stateless; import javax.ejb.remote;
6 * public interface NewSessionBeanRemote public java.util.arraylist ListUser(); public int deposit(java.lang.string cc, float depamount); public java.lang.string withdraw(java.lang.string cc, float withamount); Servlet BankServlet import Stateless.NewSessionBeanRemote; import java.io.ioexception; import java.io.printwriter; import java.util.arraylist; import java.util.iterator; import java.util.list; import javax.ejb.ejb; import javax.servlet.servletexception; import javax.servlet.annotation.webservlet; import javax.servlet.http.httpservlet; import javax.servlet.http.httpservletrequest; import javax.servlet.http.httpservletresponse; *
7 urlpatterns="/bankservlet") public class BankServlet extends HttpServlet * Processes requests for both HTTP <code>get</code> and <code>post</code> methods. request servlet request response servlet response ServletException if a servlet-specific error occurs IOException if an I/O error private NewSessionBeanRemote rem; protected void processrequest(httpservletrequest request, HttpServletResponse response) throws ServletException, IOException response.setcontenttype("text/html;charset=utf-8"); List allcust=new ArrayList(); int i=1; PrintWriter out = response.getwriter(); try out.println("<html>"); out.println("<head>"); out.println("<title>kvb</title>"); out.println("</head>"); out.println("<body>");
8 out.println("<center>"); out.println("<h1>karur Vysya Bank</h1>"); out.println("<h1>customer Details</h1>"); out.println("<table border=1>"); allcust=rem.listuser(); Iterator iterator=allcust.iterator(); while(iterator.hasnext()) if(i%5!=0) if(i==1) out.println("<tr>"); out.println("<td>"+iterator.next()+"</td>" ); else out.println("<td>"+iterator.next()+"</td>" ); i++; else i=1; out.println("</tr>"); out.println("<table>"); out.println("</center>");
9 out.println("</body>"); out.println("</html>"); finally i=1; out.close(); // <editor-fold defaultstate="collapsed" desc="httpservlet methods. Click on the + sign on the left to edit the code."> * Handles the HTTP <code>get</code> method. request servlet request response servlet response ServletException if a servlet-specific error occurs IOException if an I/O error protected void doget(httpservletrequest request, HttpServletResponse response) throws ServletException, IOException processrequest(request, response); * Handles the HTTP <code>post</code> method. request servlet request
10 response servlet response ServletException if a servlet-specific error occurs IOException if an I/O error protected void dopost(httpservletrequest request, HttpServletResponse response) throws ServletException, IOException processrequest(request, response); * Returns a short description of the servlet. a String containing servlet public String getservletinfo() return "Short description"; // </editor-fold> BankDeposit import Stateless.NewSessionBeanRemote; import java.io.ioexception; import java.io.printwriter; import javax.ejb.ejb; import javax.servlet.servletexception;
11 import javax.servlet.annotation.webservlet; import javax.servlet.http.httpservlet; import javax.servlet.http.httpservletrequest; import javax.servlet.http.httpservletresponse; * urlpatterns="/bankdeposit") public class BankDeposit extends HttpServlet * Processes requests for both HTTP <code>get</code> and <code>post</code> methods. request servlet request response servlet response ServletException if a servlet-specific error occurs IOException if an I/O error private NewSessionBeanRemote rem; protected void processrequest(httpservletrequest request, HttpServletResponse response) throws ServletException, IOException response.setcontenttype("text/html;charset=utf-8"); PrintWriter out = response.getwriter(); String CustCode=request.getParameter("cc"); String damt=request.getparameter("damt");
12 Float amt = new Float(damt); int res=0; out.println("<html>"); out.println("<head>"); out.println("<title>kvb</title>"); out.println("</head>"); out.println("<body>"); out.println("<center>"); out.println("<h1>karur Vysya Bank</h1>"); out.println("<hr>"); try res=rem.deposit(custcode, amt.floatvalue()); if (res!=0) out.println("<h4>transaction Successfully Completed</h4>"); else out.println("<h4>failure in Transaction</h4>"); catch (Exception e) e.printstacktrace(); finally
13 out.close(); out.println("<center>"); out.println("</body>"); out.println("</html>"); // <editor-fold defaultstate="collapsed" desc="httpservlet methods. Click on the + sign on the left to edit the code."> * Handles the HTTP <code>get</code> method. request servlet request response servlet response ServletException if a servlet-specific error occurs IOException if an I/O error protected void doget(httpservletrequest request, HttpServletResponse response) throws ServletException, IOException processrequest(request, response); * Handles the HTTP <code>post</code> method. request servlet request response servlet response ServletException if a servlet-specific error occurs
14 IOException if an I/O error protected void dopost(httpservletrequest request, HttpServletResponse response) throws ServletException, IOException processrequest(request, response); * Returns a short description of the servlet. a String containing servlet public String getservletinfo() return "Short description"; // </editor-fold> BankWithdraw import Stateless.NewSessionBeanRemote; import java.io.ioexception; import java.io.printwriter; import javax.ejb.ejb; import javax.servlet.servletexception; import javax.servlet.annotation.webservlet; import javax.servlet.http.httpservlet; import javax.servlet.http.httpservletrequest; import javax.servlet.http.httpservletresponse;
15 * urlpatterns="/bankwithdraw") public class BankWithdraw extends HttpServlet * Processes requests for both HTTP <code>get</code> and <code>post</code> methods. request servlet request response servlet response ServletException if a servlet-specific error occurs IOException if an I/O error private NewSessionBeanRemote rem; protected void processrequest(httpservletrequest request, HttpServletResponse response) throws ServletException, IOException response.setcontenttype("text/html;charset=utf-8"); PrintWriter out = response.getwriter(); String CustCode=request.getParameter("cc"); String withamt=request.getparameter("withamt"); Float amt = new Float(withamt); String res=null; out.println("<html>"); out.println("<head>"); out.println("<title>kvb</title>");
16 out.println("</head>"); out.println("<body>"); out.println("<center>"); out.println("<h1>karur Vysya Bank</h1>"); out.println("<hr>"); try res=rem.withdraw(custcode, amt.floatvalue()); out.println("<h3>"+ res.tostring() +"</h3>"); catch (Exception e) e.printstacktrace(); finally out.close(); out.println("</center>"); out.println("</body>"); out.println("</html>"); // <editor-fold defaultstate="collapsed" desc="httpservlet methods. Click on the + sign on the left to edit the code."> * Handles the HTTP <code>get</code> method. request servlet request response servlet response ServletException if a servlet-specific error occurs
17 IOException if an I/O error protected void doget(httpservletrequest request, HttpServletResponse response) throws ServletException, IOException processrequest(request, response); * Handles the HTTP <code>post</code> method. request servlet request response servlet response ServletException if a servlet-specific error occurs IOException if an I/O error protected void dopost(httpservletrequest request, HttpServletResponse response) throws ServletException, IOException processrequest(request, response); * Returns a short description of the servlet. a String containing servlet public String getservletinfo() return "Short description";
18 // </editor-fold> Web Pages index.jsp <html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"> <title>kvb</title> </head> <body> <center> <h1>karur Vysya Banking Services</h1> <hr> <a href="bankservlet">view Customer Details</a><br> <a href="bankdep.jsp">deposit</a><br> <a href="bankwith.jsp">withdraw</a><br> </center> </body> </html> BankDep.jsp <html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"> <title>kvb</title> </head> <body >
19 <center> <h1>karur Vysya Banking Services</h1><br> <h3>bank Deposit Operation</h3> <hr> <form method="get" action="bankdeposit"> <table> <tr> <td>enter Customer Code</td> <td><input type="text" name="cc"></td> </tr> <tr> <td>enter Amount</td> <td><input type="text" name="damt"></td> </tr> <tr > <td colspan="2"><input type="submit" value="submit"></td> </tr> </table> </form> </center> </body> </html> BankWith.jsp <html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8">
20 <title>kvb</title> </head> <body> <center> <h1>karur Vysya Banking Services</h1><br> <h3>bank Withdrawal Operation</h3> <hr> <form method="get" action="bankwithdraw"> <table> <tr> <td>enter Customer Code</td> <td><input type="text" name="cc"></td> </tr> <tr> <td>enter Amount</td> <td><input type="text" name="withamt"></td> </tr> <tr > <td colspan="2"><input type="submit" value="submit"></td> </tr> </table> </form>
21 </center> </body> </html> Output
22
23
24 Result: The above programs are deployed and verify the output.
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