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Q2221. what is event handler script ?

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Q2222. How can java script access a database ?

JavaScript

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Q2223. Which statement is used to exit a function in java script ?

JavaScript

Ans. return

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Q2224. what are well formed and valid xmls ?

XML

Ans. Well formed xml has all tags closed in the right order. well formed refers to syntax.
Valid xml is xml that succeeds validation against a DTD

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Q2225. what kind of dtd have you worked with ?

XML

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Q2226. Is XML case sensitive ?

XML

Ans. Yes

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Q2227. what is a qualified name ?

XML

Ans. QNames were introduced by XML Namespaces in order to be used as URI references.It defines a valid identifier for elements and attributes. QNames are generally used to reference particular elements or attributes within XML documents.

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Q2228. What is XPath ?

XML

Ans. XPath (XML Path Language) is a query language for selecting nodes from an XML document. In addition, XPath may be used to compute values (e.g., strings, numbers, or Boolean values) from the content of an XML document

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Q2229. What is the difference between save() and persist() in hibernate ?

Hibernate

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Q2230. What is the use of @Import and @ImportResource anotations ?

Ans. The @Import annotation is used to import one or more @Configuration classes. This annotation provides the functionality equivalent to element in xml based configuration.

The @ImportResource annotation is used to import one or more XML configuration files.

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Q2231. Which is the best collections for maintaining elements in an order ?

Core Java

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Q2232. Why did you chose programming as your career ?

General

Ans. I was always fascinated by mathematics and statistics and hence chose programming as I found It to be fit ground for utilizing those skills.

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Q2233. How can we make sue that only 1 object gets created ?

Design

Ans. We can use Singleton Design Pattern.

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Q2234. Why do want to leave your current job ?

General

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Q2235. What is Dynamic Binding ?

Core Java

Ans. Dynamic Binding happens at runtime. Method overriding is an example of Dynamic Binding

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Q2236. How do we do Inheritance in Java ?

Core Java

Ans. By extending class or implementing interface.

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Q2237. Difference between 32 bit and 64 bit JVM ?

Core Java

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Q2238. What is optimistic and pessimistic locking ?

Operating System

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Q2239. Tell about shallow and deep cloning ?

Core Java

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Q2240. How will you implement your own custom hashmap and linkedlist ?

Data Structure

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Q2241. Why does an array index starts at 0 and not 1 ?

Data Structure

Ans. The array index starts with 0 because program locates an element using the expression ( BaseAddress + ( Index * size of array Element ), where index is used as an offset. As the starting address is actually the address of first element, the index of first element is used as 0 and so on.

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Q2242. Why does an array need continuous memory locations and not Linked List ?

Data Structure

Ans. Array needs continuous memory location because it need to provide random access of it's elements which is not required for Linked List.

Array index acts as an offset from the base address and hence can retrieve the respective element using the expression Base Address + ( Index * Element Size ). This expression could only hold true if the elements are in continuous memory location.

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Q2243. What is the difference between dynamic programming and the brute force algorithm?

Algorithm

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Q2244. Design a Program to clone an object and all it's children.

Design

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Q2245. Difference between final and finally

Core Java

Ans. final can be used for variables , methods and class. A final variable cannot be changed , a final method cannot be overridden , a final class cannot be inherited.

Finally is a block which is used after Try and catch, a finally block is always executed.

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Q2246. Design a Whats app like messaging application.

architecture

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Q2247. What is immutability and What are it's disadvantages ?

Design

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Q2248. Can you explain any of your project bug for which you had to struggle a lot ?

General

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Q2249. What will happen if there is an exception in Java finally block ?

Core Java

Ans. The regular behavior of exception handling will occur. It will look for any immediate catch handler and if none is provided, it would be transmitted to the callers until a catch handler is found or it's out of main function.

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Q2250. What is the default execution method in Java?

Core Java

Ans. public static void main(String[] args)

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