All about Ravi Kishore Vaddiparthy

Maneesh Godbole wrote:Try the sysdeo plugin
Has always worked flawlessly for me.

No use

10 years ago

I tried to install Tomcat 7 into my Eclipse
when i select the option (Tomcat 7) in Servers i am getting an error prompt to check log with the following Error Code

An error has occurred. See error log for more details.
javax.xml.parsers.DocumentBuilderFactory.setFeature(Ljava/lang/String;Z)V

I am Unable to configure the server
Please Help!

10 years ago

Other IDEs, Version Control

Cleared My OCJP exam with 95%

Jhonson Ferndando wrote:Congratulations !

Thanks Jhonson!

10 years ago

Certification Results

Servlet Exception in Tomcat

Heres my servlet files to update the data in database dynamically

update.html

web.xml

UpdateServlet.java

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
public class UpdateServlet extends HttpServlet
{
Connection con;
Statement st;
public void init(ServletConfig config) throws ServletException
{
try
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con=DriverManager.getConnection("jdbc:odbc:rk","system","12345");
Statement st=con.createStatement();
}
catch(Exception e)
{
}
}
public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException,IOException
{
PrintWriter out=res.getWriter();
int id=Integer.parseInt(req.getParameter("eid"));
try
{
ResultSet rs=st.executeQuery("select esal from employee where eid="+id);
out.println("<html><body>");
out.println("<form action='updated'>");
out.println("<table border=0 align=center>");
out.println("<tr><td>Employee ID</td><td><input type='text' value="+id+" name='uid'></td></tr>");
out.println("<tr><td>Employee Salary</td><td><input type='text' value="+rs.getInt(0)+"></td></tr>");
out.println("<tr><td>Employee Updated Salary</td><td><input type='text' name='usal'></td></tr>");
out.println("<tr><td></td><td><input type='submit' value='updated'></td></tr>");
out.println("</table></form></html>");
}
catch(Exception e)
{
e.printStackTrace();
}
}
}

when i click update button it is not going to UpdateServlet throwing following error

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Error instantiating servlet class UpdateServlet
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:541)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:383)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:288)
java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
java.lang.Thread.run(Unknown Source)

root cause

java.lang.IllegalAccessException: Class org.apache.catalina.core.DefaultInstanceManager can not access a member of class UpdateServlet with modifiers ""
sun.reflect.Reflection.ensureMemberAccess(Unknown Source)
java.lang.Class.newInstance(Unknown Source)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:541)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:383)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:288)
java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
java.lang.Thread.run(Unknown Source)

note The full stack trace of the root cause is available in the Apache Tomcat/7.0.8 logs.

Please help in executing this
Thank You

10 years ago

Servlets

What is Factory Method?

Can anybody explain what is Factory Method with good easy example?
what is its Use ?

10 years ago

Java in General

Please Suggest a Good Book To Start With Hibernate

i have good knowledge till JSP
i didn't have knowledge on Frameworks
i am looking forward to start with Hibernate then to Spring
what say?

so please suggest me a good book for Hibernate
Please Attach ebook if You have One

Thank You

10 years ago

Object Relational Mapping

Cleared ocjp 6 with 100%

binay shah wrote:Hi all,
I cleared my ocjp 6 with 100%. I finished the exam in less than an hour. Exam was very very easy.
thanks to Kathy Sierra and Bert Bates Study guide and practice exam. Thanks to Devaka Cooray for his wonderful Examlab simulator.
thanks to everyone in this forum for answering my questions.

Congrats Binay Shah
I got 95%

10 years ago

Certification Results

Cleared My OCJP exam with 95%

Balaji Vankadaru wrote:Congrats Dude. Thanks for the info.

Thank You

10 years ago

Certification Results

Cleared My OCJP exam with 95%

Nam Ha Minh wrote:Congratulations Ravi Kishore Vaddiparthy! Awesome score!

Thank You Nam Ha Minh

10 years ago

Certification Results

Cleared My OCJP exam with 95%

Arnab Sunny Rakshit wrote:Congrats...
Mine is tomorrow. Hope all goes well.

Thank You
Whats Your Result?

10 years ago

Certification Results

Cleared My OCJP exam with 95%

Hi all Crazy Java Fans,

I am very happy to say that i cleared my OCJP 1Z0-851 exam with 95%.
I Prepared for the Last One Month and Made it Possible

Coming to my preparation
I Completely Read Kathy Sierra SCJP Book Thrice and Worked on the Exercises given in the book.
After familiarized with every point in the book, I took 2 Minute Drills and solved Q&A
If i come across any Doubt I didn't refer the book instead i coded it and i recommend you to code a lot if you get any Doubt
Though I didn't go for any mock tests, i recommend you to write them.

Coming to registration
I bought a voucher from Pearsonvue and scheduled the exam.
In Exam center they ll check the Photo ID and Take your Photo and Signature

Coming to Exam
First it will display all the Rules and Regulations
Then the exam starts with a chance to mark the question and review it at the End.
In my Case There were no Drag and Drop Questions
After Completion of Exam You Can Download Your Score Card from Certview.com of-course Test Center will assist you through that

That's all about my OCJP Experience
Hope it will help the New Test Takers

10 years ago

Certification Results

Ravi Kishore Vaddiparthy

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