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  1. Jaganmani says:

    Very useful blog for developers

  2. Gavi Suresh says:

    Very very useful blog site for professionals and learners

  3. Nageswararao Kancheti says:

    This s my most likely site. Very Very Useful web site for Professionals & Learners.

    nice to give comment

  4. Nageswararao Kancheti says:

    I think no site is there like this providing the best services for J2EE develpment & training

  5. Paritala Ramanji says:

    Is good site for java developers

  6. Brijesh says:

    nice work….really it help me a lot….well done….

  7. Mat says:

    Please integrate twitter and email subscription in to this site so that we can get alert regarding of new posts instantly.

    • Viral Patel says:

      @Mat: We are already on Twitter, Facebook and Google+. Also you can subscribe via email; see “subscription” section in right sidebar.

  8. laeeq says:

    really usefull information!

  9. Matheen says:

    Thank you very much…it was very help full :D

  10. Rajesh Kumar Jha says:

    So nice, very useful information

  11. Kaustav says:

    Useful tutorial

  12. akv says:

    best tutorial

  13. Jagannath Prakash says:

    It is so much helpful for the learning students who having no guide line of any guide(faculty)

  14. Bubbler says:

    hi viral,
    I need a Spring mvc project with jdbc connection as a web application.
    need to use jsp page. need to get a sql query from text area with a button. result should fetch from database. please help me out.thanks in advance.

  15. Daxa Varsani says:

    I am creating my project on voice implementation in java using sphinx API. Can you please help me how to begin?

  16. Sandeep says:

    Hi Viral,

    I want to submit some articles on you site. Can you please tell me about the format of article you are accepting?

  17. dawood says:

    Thanks a lot
    this tutorial and this site are perfect

  18. Ankur Patel says:

    Hi Viral,
    I have gone through your tutorials and articles. They are just great. I am working on creating website in PHP with admin panel and through this panel I want to let the user upload image that directly publish on the webpage.

    Please guide me further


    Ankur Patel

  19. Bishnu Trivedi says:

    it worked thanku very much

  20. Rahul says:

    good site for taking the help in java

  21. Rakesh K Prajapat says:

    I want to join this for more details about this.

  22. devendra shrivastava says:

    Nice website to learn about New technologies and research in IT……..

  23. T.Santosh says:

    Hello All,

    I am designing the base layout in Spring base layout with table, and other jsp’s are in table with the css for color + pagination,
    but it is not compatible with low resolution screens,
    give me suggestions can i start to use DIV’s instead table tr td…??

    Thanks in advance …:) *_*

  24. Geeta says:

    Hello Viral,
    I have a requirement where I have to create excel file as an output with cell value and count as say 1 based on some input file data.
    Also I have a requirement to update existing excel file if I have found one more occurence of same record in input file. In this case I should update same record in excel by incrementing count as 2.

    can you please help

  25. Anurag says:

    How to found which class or method contain specific annotation?

    Suppose we are having a class with separate user define annoation in same package like


    class A



    class B



    class C


    How will I find which class is using @one annotation and which @Two?


    We are having a class in which methods are annotated and i want to retrieve which annotation is having which annotation

    like :

    class A


    public method1()



    public method2()



    public method3()



    Any other idea to do something like this will be appreciated. Any help will be appreciated
    I am using core java reflection and annotations.

    Original Scenario:-

    Suppose i am having a class testcases having GUI ,Functional and others these three categories of testcase. i want to found method or class according to category and execute that method or class which ever is possible.

  26. Rakesh says:

    How to take the screenshot of my application using Java code when user is using the same from his/her system.

    We are using JSF 1.2 Framework in our application.

    Is der any way to take the screenshot??

    Please suggest solution..

  27. bikash says:

    Hi Sir,

    HI Sir,

    I hv create a sp which contains one select stmt and one update stmt in oracle and i have to access it through my java class .But i am getting some errors .

    I mention here my .java file,procedure and table structure and the error file.

    Please make some necessary correction and send me updated code.

    Please respond this post as soon as possible.

    The details are as follows:-

    import java.sql.*;

    class StoredProcedure
    public static void main(String[] args)throws Exception
    Connection con = DriverManager.getConnection(“jdbc:oracle:thin:@localhost:orcl”,”scott”,”tiger”);

    CallableStatement cst = con.prepareCall(“{call addinterest(?,?)}”);




    float accbal = cst.getFloat(2);
    System.out.println(“Modified balance is rs:” +accbal);
    catch (Exception e)



    oracle table structure

    ( ACCNO NUMBER(10),


    ano IN accounts.accno%TYPE,
    bal OUT accounts.accbal%TYPE)

    select accbal into bal from accounts where accno=ano;
    update accounts set accbal=bal where accno=ano;

    and the error is

    java.sql.SQLException: ORA-01403: no data found
    ORA-06512: at “RETDEV.ADDINTEREST”, line 8
    ORA-06512: at line 1

    at oracle.jdbc.driver.SQLStateMapping.newSQLException(
    at oracle.jdbc.driver.DatabaseError.newSQLException(
    at oracle.jdbc.driver.DatabaseError.throwSqlException(
    at oracle.jdbc.driver.T4CTTIoer.processError(
    at oracle.jdbc.driver.T4CTTIoer.processError(
    at oracle.jdbc.driver.T4C8Oall.receive(
    at oracle.jdbc.driver.T4CCallableStatement.doOall8(
    at oracle.jdbc.driver.T4CCallableStatement.executeForRows(
    at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(
    at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(
    at oracle.jdbc.driver.OraclePreparedStatement.execute(
    at oracle.jdbc.driver.OracleCallableStatement.execute(
    at oracle.jdbc.driver.OraclePreparedStatementWrapper.execute(
    at com.per.sub.StoredProcedure.main(

  28. bikash says:


    I am new to stored procedure. I have one table and i have written a stored procedure.
    My doubt is how to execute the below stored procedure.

    Please help me as soon as possible.

    oracle table structure
    (	ACCNO NUMBER(10),
    ano IN accounts.accno%TYPE,
    bal OUT accounts.accbal%TYPE)
    select accbal into bal from accounts where accno=ano;
    update accounts set accbal=bal where accno=ano;

    Please help me how to execute the stored procedure in oracle.

  29. bikash says:


    I have 2 files having some records/contents. My requirement is that i have to find out the common records as well as non matching records.

    How can i get the answer ?

    Please help me.

  30. bikash says:


    I have an applet which have some drop dwon fields and text fields and one button which are interlinked to each other.i.e when i select one value from one field then another field will polulated. i.e the data came from the database and populated in the corresponding field.


    When i select a value from the drop down list then the button field will blinking . I have to stop the blinking.

    How can i do it ?

    Please help me.

  31. Sarita says:

    Superb site help me lot i Understanding of Spring MVC

  32. Sarita says:

    Superb site … Help me lot in Understanding of Spring MVC

  33. DC says:

    Yeah, a lot of good stuff!

  34. Hari Bollina says:

    Can u suggest spring with angulerjs sample example using jsp file.

  35. Avi says:

    informative site

  36. Nadeem Sarwar Artest says:

    Kindly feedback more info about java/ eclipse.

  37. Vivek Basal says:

    I have seen some of the Oracle Article…just want to say Superb…gr8 study material…

  38. Yogesh Patel says:

    I am using Struts2 for developing web application.In configuration files like struts.xml, is used.

    In Network protocol analyzer tool is is found that application makes call to “”,
    When application makes call to “” ? and how to prevent makes call for the same?

  39. oscablenet says:

    where i can find netbeans tutorial ?

  40. suneel says:

    concatenate two strings without using strcat() in java

  41. gaurav says:


  42. Shaikh Hussain says:

    Hello Sir,

    i am new to Spring and Hibernate. I want to integrate Spring 3.0 with Hibernate 3.2. But i do not have any idea how to do that. Sir if and only if possible can you provide me a simple example Spring with Hibernate using MVC architecture with annotation.

    Its humble request sir.

    Thank You.

  43. Nijan says:

    I am trying to develop web application using… Java, but i want to know how in real time URL mapping happens.. For example if we use CODEIGNITOR FRAMEWORK for PHP.. we get “route.php” there we can configure the URL’s ex::$route[‘lp/hospital’] = “commoncontroller/getPage”; when we hit
    it goes to commoncontroller class and getpage function, The same way how can we do it for Java based web application. PLz let me help

  44. Arti says:

    Hi Viral,I want to implement LDAP authentication on Apache tomcat server.I tired with information provided in your blog ,but it’s not working.Plzzzzz can you help on this.

  45. taibang salam says: i was change my password but i cant sign in and it shows wrong password.I dont want to lost my account so can you please help me to get my account back

  46. Swe Swe Latt says:

    very useful

  47. Praveen says:


    Please any one help how to create a nested tabs, if any idea please share me.

  48. Aezaz says:


  49. ranjit says:

    Hi Viral,

    Hope you doing good, thank you so much for making such a informative articles i learned lot from your website. it will be good if your team start writing about react.js and angular2


  50. qwfys200 says:

    very good

  51. Tarang says:

    Hello Mr Viral,
    Nice article on service/factory.
    But i have still doubt , can you please help me out to understand difference between these terms: service and factory?.it will be very helpful for me if you do this for me.

  52. Dinesh Krishnan says:

    Very useful blog for Java Developers and Students

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