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

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Q1481. How are hash codes generated ?

Data Structure

Ans. Use hashCode() which returns an integer value, generated by a hashing algorithm

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Q1482. Difference between Arrays and LinkedList ?

Data Structure

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Q1483. How can we make sure that only one object of a class get's created ?

Design

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Q1484. Explain your experience working on UI ? Have you worked with JSF ?

General

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Q1485. Have you faced any problem integrating software / services with any of your partners or vendors ?

General

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Q1486. Can we capture the Request body within the interceptor or Filter and perform operations on it ?

Spring

Ans. Yes, But with interceptor it will remove the body from the request and then we will have to explicitly add the attributes to the session to forward it to the handler.

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Q1487. Have you ever faced challenged with your current work ?

general

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Q1488. Which of the following - arrays or LinkedList allow elements to be accessed using index and how ?

Data Structure

Ans. Arrays allows elements to be accessed directly using the index.

As Array elements are stored in continuous memory locations it's very easy to find the memory address of any element using the formula as following

Memory Address of Array start or index 0 + ( Size of array element * Index )

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Q1489. Can you give an example of a Get and Post Request.

Web Service

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Q1490. Can you design a program that can identify if two shapes on x and y plane would intersect ?

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Q1491. Explain CAP Theorem.

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Q1492. Have you heard of Rest method Patch ?

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Q1493. Do you think we should have security Tokens in Url ?

Design

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Q1494. What information should be sent in url vs sent within the body in case of Post request ?

Design

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Q1495. What are the Messaging systems / technologies you have worked with ?

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Q1496. What are the different delivery policies in Apache Kafka ?

Apache Kafka

Ans. Exactly once , At least once , At max once

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Q1497. What is your role in current project ?

General

Ans. Possible Answer - Java Developer

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Q1498. Have you ever encoded the response before sending it back ?

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Q1499. Have you ever encoded the response before sending it back from the service? If Yes , Which encoding was used ?

Ans. In two different situations I used UTF-8 and Base 64 encodings.

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Q1500. Have you ever worked with single sign on ?

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Q1501. Can you explain JSON specification ?

JSON

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Q1502. Can you explain filter and collectors in java 8 ?

Core Java

Ans. Filters are used to filter object in stream on certail criteria. And collector is used to collect outcome of the stream. Collector is a terminal operation.
List numbers = List.of(1,2,3,4,5,6,7);
List evenNumbers = numbers.stream().filter(n -> n%2==0).collect(Collectors.toList());
The above code will filter out odd numbers and return the list of even number.

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Q1503. Can you explain filter and collectors in java 8 ?

Core Java

Ans. Filters are used to filter object in stream on certain criteria.
Collector is used to collect outcome of the stream. Collector is a terminal operation.
List numbers = List.of(1,2,3,4,5,6,7);
List evenNumbers = numbers.stream().filter(n -> n%2==0).collect(Collectors.toList());
The above code will filter out odd numbers and return the list of even number.

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Q1504. Write a program that identifies numbers in a list that are palindrome and perfect square ?

Core Java

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Q1505. Why do you want to leave your current job ?

General

Ans. The most effective and acceptable reasons for leaving your current job should be positive e.g. moving forward in your life or career

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Q1506. Do you like your work in current project ?

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Q1507. How is the culture at your current company ?

general

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Q1508. 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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Q1509. What is garbage collection ?

Core Java

Ans. The garbage collection is a facility wherein a program runs on the Java Virtual Machine which gets rid of objects, which are not being used by a Java application anymore. It is a form of automatic memory management and recollection.

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Q1510. Find Intersection/union between two arrays.

Core Java

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