Shiva Gajjala

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since May 02, 2014
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Eclipse IDE Tomcat Server Java
Hyderabad,India
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Recent posts by Shiva Gajjala

Hi friends, I am doing my college assignment .I would like to restrict the user to enter integer or double value for dollar and display an error message saying "Enter valid number".

6 years ago
I have came across this code, looks simple but little confusing .Someone explain me this in a broad way.
Hi author,
For whom do you recommend this book ? Is it for beginners or experienced persons.

Regards
Shiva
Thank you Rob Camick, I would like to do my homework on my own . I posted it just to make my question clear. I will make changes as per your suggestions and learn from the link provided. Can you tell me what method should I use to display a new frame as popup so that I can display labels,text fields and a button as per my assignment. When I use JOptionPane.showInputDialog() method I could get only one label and a textbox with a button, but I want multiple labels and text boxes in the pop up window.
6 years ago
Hi friends , I am doing my college assigment .I am struck up in populating a pop up window that contains multiple text boxes when radiobutton is clicked.Please suggest relevant method and some code .My task is below .
Homework #2
1. Create a GUI that has two JRadioButtions which allow a user to select between an employee and a manager. (20 points)
2. Create a GUI that pops up if an employee is selected. This new window should contain JLabels with JTextFields that allow the user to enter in all the employee's relevant information - e.g. Name, Title, Age, and Salary. Use the same inputs from the Jane Doe case in Homework #1. The new window should also allow the user to raise the employee's salary by a certain percentage - JTextField (% Increase). Use the employee raiseSalary(int percent) method from Homework #1. Lastly, the new window should include a calculate button which computes and outputs the new salary when pressed. In this case, the new salary would be 82500.0. (20 points)
3. Create a GUI that pops up if a manager is selected. This new window should contain JLabels with JTextFields that allow the user to enter in all the manager's relevant information - e.g. Name, Title, Age, Years of Experience, Highest Degree Earned, Salary, and Promotion Bonus. Use the same inputs from the John Doe case in Homework #1. The new window should also allow the user to raise the manager's salary by a certain percentage - JTextField (% Increase). Use the manager raiseSalary(int percent) method from Homework #1. Lastly, the new window should include a calculate button which computes and outputs the new salary when pressed. In this case, the new salary would be 115000.0. (20 points)
4. Create a GUI error message that pops up if the user enters invalid information into the GUI from question #2. (20 points)
5. Create a GUI error message that pops up if the user enters invalid information into the GUI from question #3. (20 points)

My code is below,
6 years ago
Hi Ganesan Ponnusamy,

I would like to take certification exam but I just have the knowledge for OCPJP 6 or 7. Using the Exam pratice tests can I learn the new topics like Lambdas,etc. Can I write OCAJP 8 and OCPJP 8 without writing OCPJP7?
How many tests are available ? Do they cover all the topics ?

Thank you
-Shiva
I would like to start preparing for OCAJP 7 and take the exam within 2 months. I had training for OCPJP 6 3 years ago but new topics had been added to 7 & 8. I have no idea of regular expressiona and Lambdas .

Please suggest me a good book for preparing for OCAJP 7 that contains questions and explanation of answers too so that it saves lot of time in preparation. I would like to order for the book in amazon if one is available.
I would like to know the difference between OCAJP 7 and OCPJP 7. Doesn't OCAJP contains programs in the exam ?

Thank you
Shiva kumar
Thanks for the reply Rodion Gork. I have prior experience as a software developer. I am a little familiar with J2EE and frameworks like spring & hibernate. I would like to be a certified java programmer for my personal use, so that I can look for a job in CPT. I have gone through that website already but couldn't really understand which one to choose and start with . I want to know what version of exam could be effective and put some weight in my resume while applying for jobs.
Hi friends,

I had taken training in India on SCJP 6 around 3 years ago but hadn't given any exam. Now I came to US for pursuing my masters in computer science. I would like go for Java certification exam now. Please suggest me how to start and what version of the exam should I give (SCJP 6 or OCAJP 7 or OCAJP 8 ). Please provide the links for applying for the exam and recommend book for the exam. I would like to spend a month on the preparation/revision and give the exam. Thanks in Advance.

Regards,
Shiva kumar
Hi Author,

I am planning to go for java certification .I do not have the knowledge of Lambda expressions. Is this book useful for the preparation of the test ? I have no idea whether the exam includes Lambdas.

Thanks
Shiva
6 years ago
Hi Authors ,
I know basic html and css. What is the difference between html 5 and previous versions. Does it integrate easily with jQuery ? Do we need to have good exposure in web development to follow this book ?

Thank you-
Shiva
Hi authors,Welcome!!

I am new to big data, Doesn't have much knowledge about it. Is this book applicable for java developers? I am hearing the word Elasticsearch for the first time. Is it similar to hadoop or what exactly it is?

Thank you
-Shiva
6 years ago
Thanks a lot Cay for your patient reply.I would definitely like to read your book
6 years ago
Hi Author , the contents of the book seems interesting as it covers everything in core java. I have few questions

- Where do we use compiling API and scripting API?
-Can we learn from the scratch about annotations like how to create our own annotations and using it?
-Does Internationalization comes under core java ?

Thank you-
Shiva
6 years ago