Interview Questions and Answers for 'L' | Search Interview Question

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Q541. What are different types of IOC containers ?

Design

Ans. J2ee Web Containers and Core Containers

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Q542. If SOAP is more secure than Rest, Why many applications today use Rest ?

Web Service

Ans. SOAP supports only xml whereas Rest support many other formats.

Rest services are very light weight compared to SOAP.

SOAP services are code heavy as they require creation. of stubs and skeltons.

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Q543. If your application has multiple databases, how many changes you have to made in Hibernate?

Hibernate

Ans. If you have mulitple Databases you just need to add multiple configuration files and create the corresponding SessionFactory object.

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Q544. Write code to print a Pyramid pattern ?

Core Java

Ans. public static void printTriagle(int n)
{
// outer loop to handle number of rows
// n in this case
for (int i=0; i1; j--)
{
// printing spaces
System.out.print(" ");
}

// inner loop to handle number of columns
// values changing acc. to outer loop
for (int j=0; j<=i; j )
{
// printing stars
System.out.print("* ");
}

// ending line after each row
System.out.println();
}
}

// Driver Function
public static void main(String args[])
{
int n = 5;
printTriagle(n);
}

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Q545. Describe structure of a Web application.

architecture

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Q546. Can we have multiple inheritance in java using abstract class ?

Core Java

Ans. No

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Q547. What is the difference between abstraction and abstract class ?

Core Java

Ans. Abstract class is one of the facility for achieving abstraction in Java.

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Q548. Difference between == and === ?

JavaScript

Ans. == compares values === is used in scripting languages for comparing two values as well as there data tpe. like in js,php.

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Q549. Write code to sort an array.

Algorithm

Ans. https://www.geeksforgeeks.org/arrays-sort-in-java-with-examples/

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Q550. How to calculate string length without using inbuilt function

Core Java

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Q551. What is the difference between Maven and Jenkins ?

Tools

Ans. Maven is a build tool whereas Jenkins is continuous integration system.

Maven deals with application compilation, build and packaging whereas Jenkins tracks SCM for triggering builds and packages, triggering parent project builds upon dependencies, initiating builds and performing alerts. So Jenkins is kind of a wrapper around SCM and Build Tool for continuous integration and deployment.

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Q552. Write SQL to get all members and the count of books they have checked out , even the ones that haven't checked out anything.

SQL

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Q553. How do you prefer to resolve team disputes , just talking or in written ?

general

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Q554. What is the Big O notation for Fibonacci series - both iterative as well as recursive ?

Algorithm

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Q555. What is the thing that would turn you off for a company ?

General

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Q556. What value you would like to see in an employee if you own a company ?

General

Ans. The intent of this question is to see what values as a employee you have. So answer this cautiously as they will try to judge you on the basis of this answer.

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Q557. How is the culture at your current company ?

general

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Q558. Do you have any problems with your team that you plan on changing ?

General

^{This question was recently asked at 'Expedia'.This question is still unanswered. Can you please provide an answer.}

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Q559. Have you used Java 8 Lambda expressions ?

Core Java

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Q560. Write a Program to print a pattern ?

Core Java

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Q561. Difference between static and dynamic binding ?

Design

Ans. Static binding happens at the compile time whereas dynamic binding happens at runtime.

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Q562. What is the difference between TreeSet and TreeMap ?

Core Java

Ans. TreeSet contains only values as elements whereas TreeMap contains Key value pairs.

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Q563. Suppose we make an api call using multithreading, How would you design to make sure that we have received response for all threads before exiting the main thread ?

Design

Ans. We can use HashMap for tracking response status for all threads. We can wait every n second by using Thread.sleep and exit the main thread only once we have received response for all threads.

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Q564. How executor service is better than using primitive Threading mechanism using Thread class or runnable Interface ?

Core Java

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Q565. How does encoding affect using Reader / writer classes or Stream classes in Java ?

Core Java

Ans. Which group of bytes represent which character is defined by character encoding. So when reading character by character from a stream of bytes using Reader, specifying character encoding becomes significant as the same group of bytes can represent different character in different character encoding(Eg UTF-8 and UTF-16 etc.)

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Q566. What is the doctype declaration at the top of html page ?

Html

Ans. It is an instruction to the web browser about what version of HTML the page is written in, which specifies the rules for the markup language, so that the browsers render the content correctly.

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Q567. How can we align a particular html element to the center using css ?

CSS

Ans. By using attribute align:center

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Q568. If we have width of an html element as 100px and a border of 10 px. What will be the effective width of the element ? Will the border start after 100 px or after 90 px ?

Html

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Q569. Draw uml for singleton pattern.

Design

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Q570. Suppose you have 8 balls, one of them is either have more/less weight, In how many least possible iterations would you find that ball?

Design

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