J2EE and Servlets

[Angela D'souza]

Hi,
I was working in J2EE and Servlet for four years in 2004. After that, due to my son medical condition i resigned job. Then after i didn't any work on java for 3 yrs now. I want to do practice so i can apply again in market. Can anyone let me know good user friendly tutorials on Java (setup, coding etc for J2EE) through which i can learn fast.
Also which version is latest in J2EE, Tomcat, Webshere, Weblogic in market?
Thank You,
Angela
[ February 21, 2008: Message edited by: Angela D'souza ]

[Ben Souther]

In my signature are specs for servlets and JSP.
Reading these documents would be a good way to start gettting back up to speed with these technologies.

Tomcat 6 is the latest version of Tomcat.
It supports Servlet spec 2.5 and JSP 2.1.

[Arnav Mitra]

Originally posted by Angela D'souza:
Hi,
I was working in J2EE and Servlet for four years in 2004. After that, due to my son medical condition i resigned job. Then after i didn't any work on java for 3 yrs now. I want to do practice so i can apply again in market. Can anyone let me know good user friendly tutorials on Java (setup, coding etc for J2EE) through which i can learn fast.
Also which version is latest in J2EE, Tomcat, Webshere, Weblogic in market?
Thank You,
Angela

[ February 21, 2008: Message edited by: Angela D'souza ]

There are some nice tutorials at coreservlets.com specially Marty Hall's.
If feel Marty Hall is a great author, besides him you can go for SCWCD by Hanumant deshmukh.
[ February 27, 2008: Message edited by: David O'Meara ]

[David O'Meara]

Arnav Mitra, I removed a couple of items from your post that may have been suggesting something we don't approve of...

[Roger Chung-Wee]

WebLogic Server 10.0 supports, amongst other things:

Java EE 5.0
Java EE Servlet 2.5
Java EE JSP 2.1

The full standard support is found here.
http://edocs.bea.com/wls/docs100/notes/new.html#wp1065515

[Angela D'souza]

Thank you all.

I am still looking online user-friendly tutorials which teaches from very basic on Java Servlets. (If possible gives nice pictures with examples)

Do you know any?

Thank You,
Angela

[Bosun Bello]

Well, it depends on what you mean by basic. If you used to work with J2EE and servlets like you said, the basic principles of servlets and JSP have not changed since then. Like mentioned above, the coreservlets and more servlets books are a good place to start. The former is available online.

Originally posted by Angela D'souza:

I am still looking online user-friendly tutorials which teaches from very basic on Java Servlets. (If possible gives nice pictures with examples)

Do you know any?

Thank You,
Angela

[Ben Souther]

I agree with Bosun.
Servlets haven't changed much.

JSP on the other hand has.
One of our sheriff's has written quite a lot about the new features in our Journal (with pictures, etc..).

See:
http://www.javaranch.com/journal/200603/Journal200603.jsp#a5
http://www.javaranch.com/journal/200508/Journal200508.jsp#a1
and
http://www.javaranch.com/journal/200510/Journal200510.jsp#a1

[Arnav Mitra]

Here is a small application that helps you to post your skills into a database also it offers an option to cut-paste a part of your resume.

It uses a simple HttpServlet, a DAO and HTML. Hope it gives you some insight to the Servlet API. I'll share the code here.

The DAO

    
package com.iacsys.jobsmart;
 
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
 
public class ResumeDAO 
{
Connection conn;
Statement stmt;
ResultSet rs;
String urlString = "jdbc :-o	 racle:thin:@127.0.0.1:1521:MyOracle";
String username = "scott";
String password = "tiger";

public void getConnected()
{
try
{
Class.forName("oracle.jdbc.driver.OracleDriver");
conn = DriverManager.getConnection(urlString , username, password);
stmt = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);
conn.setReadOnly(false);
}
catch(ClassNotFoundException cnfe)
{
cnfe.printStackTrace();
}
catch(SQLException sqle)
{
sqle.printStackTrace();
}
}

public void insertInfo(String fn, String mn, String ln, String sex, String city, String sS, String desc)
{
String updateString = "insert into resumes values(resume_ref_Id.NEXTVAL," + " '" + fn + "', '" + mn + "', " + "'" + ln + "', '" + sex + "', '" + city + "', '" + sS + "', '" + desc + "')";
try 
{
stmt.executeUpdate(updateString);
conn.commit();
stmt.close();
} 
catch (SQLException e)
{
e.printStackTrace();
}
}
 
public String getReferenceNo()
{
String queryString = "Select REF_ID from resumes";
String referenceNo = "";
try 
{
stmt = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);
rs = stmt.executeQuery(queryString);
rs.last();
referenceNo = rs.getString(1);
}
catch (SQLException e)
{
e.printStackTrace();
}
return referenceNo;
}
}
 

 
 
package com.iacsys.jobsmart;
 
import java.io.IOException;
import java.io.PrintWriter;
 
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
public class PostResume extends HttpServlet
{
private static final long serialVersionUID = 3718380143289904378L;
 
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String fName = request.getParameter("fName");
String mName = request.getParameter("mName");
String lName = request.getParameter("lName");
String gender = request.getParameter("genderRadio");
String citySelect = request.getParameter("CitySelect");
String description  =request.getParameter("DescriptionText");
String[] skills = request.getParameterValues("checkbox1");
String skillSet = "";
for(int i = 0; i < skills.length; i++)
{
skillSet += (skills[i] + ", ");
}
ResumeDAO dataAccesor = new ResumeDAO();
dataAccesor.getConnected();
dataAccesor.insertInfo(fName, mName, lName, gender, citySelect, skillSet, description);

out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println("<HEAD><TITLE>JobSmart: You Made a Smart Choice</TITLE></HEAD>");
out.println("<BODY>");
out.println("<h2>Your Resume has been posted!,,</h2><h4><i> thank you for choosing JobSmart.</i></h4>");
out.println("First Name: " + fName + "<br>");
out.println("Middle Name: " + mName + "<br>");
out.println("Last Name: " + lName + "<br>");
out.println("Sex: " + gender + "<br>");
out.println("Your Skill Set: " + skillSet + "<br>");
out.println("<br>");
out.println("City of Preference: " + citySelect + "<br>");
out.println("Description: " + description + "<br>");
out.println("<h5>For future correspondence quote this reference Number: " + dataAccesor.getReferenceNo() + " </h5>");
out.println("</BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
 
}

  
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>JobSmart.com :-P	 ost your Resume the smart way..!!!</title>

    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="this is my page">
    <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
    
    <!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
 
  </head>
  
  <body><br><br><body bgcolor = "lightBlue">
  <form action = "servlet/PostResume">
  <h1><b><i><marquee>Hi!!!.. Welcome to JobSmart, The smartest way to get hired.</marquee></i></b></h1>
  <div align="left"><font face="Arial Unicode MS">First Name:</font> 
         
  <input type="text" maxlength="30" name="fName"><br></div>
  <br><font face="Arial Unicode MS">Middle Name:</font>  
  <input type="text" maxlength="30" name="mName"><br>
  <br><font face="Arial Unicode MS">Last Name: </font> 
      
  <input type="text" maxlength="30" name="lName"><br>
  <br>
  <em><font face="Arial Unicode MS">Gender:</font>
   </em>
       
  <input type="radio" value="Male" name="genderRadio">
      
  <em><font face="Arial Unicode MS">Male</font></em>
      
  <input type="radio" value="Female" name="genderRadio">
     
  <em><font face="Arial Unicode MS">Female<br> 
  City:   </font></em><select name="CitySelect">
<option value="NULL">--Select City--</option>
<option value="AHM">Ahmedabad</option>
<option value="BLR">Bangalore</option>
<option value="BBSR">Bhubaneswar</option>
<option value="CHE">Chennai</option>
<option value="GUR">Gurgaon</option>
<option value="HYD">Hyderabad</option>
<option value="KOL">Kolkata</option>
<option value="MAN">Mangalore</option>
<option value="MUM">Mumbai</option>
<option value="MYS">Mysore</option>
<option value="DEL">New Delhi</option>
<option value="NOI">Noida</option>
<option value="PUN">Pune</option>
<option value="RAN">Ranchi</option>
<option value="RKL">Rourkela</option>
 
</select>
<br><em><font face="Arial Unicode MS">Skills:    <br></font></em>
  <input type="checkbox" value="Java" name="checkbox1">
     
  <font face="Arial Unicode MS"> Java<br></font>
  <input type="checkbox" value="J2EE" name="checkbox1">
     
  <font face="Arial Unicode MS"> J2EE<br></font>
  <input type="checkbox" value=".NET" name="checkbox1">
      
  <font face="Arial Unicode MS">.NET<br></font>
  <input type="checkbox" value="ABAP" name="checkbox1">
      
  <font face="Arial Unicode MS">ABAP<br></font>
  <input type="checkbox" value="C++" name="checkbox1">
      
  <font face="Arial Unicode MS">C++<br></font>
  <input type="checkbox" value="C#" name="checkbox1">
      
  <font face="Arial Unicode MS">C#</font><br>
  <input type="checkbox" value="C" name="checkbox1">
      
  <font face="Arial Unicode MS">C</font><br>
  <input type="checkbox" value="Oracle" name="checkbox1">
      
  <font face="Arial Unicode MS">Oracle PL/SQL<br><br>
  Description:<br><br></font>
  <textarea wrap="hard" cols="40" rows="4" name="DescriptionText">
  Cut and Paste your Resume here
</textarea><br>
<font face="Arial Unicode MS"><br></font>
<div align="center">
<font face="Arial Unicode MS">
        
        
        
     
</font><input type="submit" value="SubmitResume" name="SubmitButton">
    
<input type="reset" value="Reset" name="ResetButton">
<font face="Arial Unicode MS"> 
    <br>        
            
</font></div>
</body>
</html>
 

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" 
xmlns="http://java.sun.com/xml/ns/j2ee" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
<a href="http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">" target="_blank" rel="nofollow">http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"></a>
  <servlet>
    <description>This is the description of my J2EE component</description>
    <display-name>This is the display name of my J2EE component</display-name>
    <servlet-name>PostResume</servlet-name>
    <servlet-class>com.iacsys.jobsmart.PostResume</servlet-class>
  </servlet>
 
  <servlet-mapping>
    <servlet-name>PostResume</servlet-name>
    <url-pattern>/servlet/PostResume</url-pattern>
  </servlet-mapping>
  <welcome-file-list>
    <welcome-file>SendResume.html</welcome-file>
  </welcome-file-list>
</web-app>