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ClinTech Technical Test Questions

Posted on :23-04-2016
Q1. In a 3-tier web application, what are the 3 tiers? If you have to add code to retrieve values from the database, which tier will the code be a part of?


Q2. When do you get a –Class Not Found Exception? How will you fix it?


Q3. What is a WAR file? What java tool would you use to create one?


Q4. Will the following code compile?
If yes, what is the output on line 7?
If no, how will you fix the code? Once fixed, what will be the output on line 7?

1. String str = Hello/ World/ This/ is/ a/ test;
2. String[] val = str.split (/);
3. for ( int j = 0; j < val.length; j++){
4.  List a = new ArrayList();
5. a.add(val[j]);
6. }
7. System. out. println (List size: +a.size());


Q5. Write code to show how you can pass an object from a servlet to JSP and how you can retrieve that object in the JSP?


Q6. What exception will the following piece of code throw? How can you fix it?

boolean check = false;
String x = null;
if(check) x = Testing;
System. out. println (string length =+ x.length());


Q7. If you have to store data as key-value pairs, which data structure will you use? Please show code to add and delete elements from this data structure using the Java APL.

Example: You declare the data structure called myinfo and you store data (key, value pairs) in this data structure as:

firstname, Hari
lastname, Gupta
phone, 123456789.

Then myinfo.get(firstname) should return Hari etc.


Q8. When do you get an - Array Index Out Of Bounds Exception and how will you fix it?


Q9. Lets say you have a JSP which has a form that the user can fill out. The form submits to a servlet. In the servlet, one of the form inputs needs to be used as integer. Write code to show how you will retrieve this particular form value in the servlet and convert to integer value? Please mention any exceptions that may be thrown and how you would handle it in code.


Q10. Write a Java program with a main() method (not JSP) to do the following:

Ask user to enter his full name.
When the user enters his name, parse the input into 2 fields -- First Name, Last Name.
Then display it back to the user as , .
Example, if I run the program, I get:
> Please enter your full name: Sachin Tendulkar
> Tendulkar, Sachin 

In your code, be sure to handle exceptions - what happens if the user does not enter anything, just hits return? Or what happens if the user enters more than two names, like Vijay Kumar Chaurasia?


  
   






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