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Q1561. Which is the best collections for maintaining elements in an order ?

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Q1562. What is difference between url based and component based web application ?

J2EE

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Q1563. 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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Q1564. How can we make sue that only 1 object gets created ?

Design

Ans. We can use Singleton Design Pattern.

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Q1565. Why do want to leave your current job ?

General

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Q1566. Tell about shallow and deep cloning ?

Core Java

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Q1567. What is the difference between dynamic programming and the brute force algorithm?

Algorithm

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Q1568. Design a Program to clone an object and all it's children.

Design

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Q1569. Tell something about Dependency Injection and it's drawbacks. In which situation, you may not like to use dependency injection ?

Design

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Q1570. What is setter injection ?

Spring

Ans. Setter Injection in Spring is a type of dependency injection in which the framework injects the dependent objects into the client using a setter method.

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Q1571. Given a String with letters , numbers and special characters , extract Tokens from it. The rules for Token extraction are ac follows

1. Should for token of all characters till a number or special character is found
2. Should form token of all numbers till a character or special character is found
3. Special character in itself is a token
4. Ignore white spaces

For example - Bob Said "He is here"

should result in

Bob A
Said A
" S
He A
is A
here A
" S

where a is specifying alphabet and S as special character

Design

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Q1572. Design a Whats app like messaging application.

architecture

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Q1573. What is immutability and What are it's disadvantages ?

Design

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Q1574. Can you explain any of your project bug for which you had to struggle a lot ?

General

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Q1575. 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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Q1576. how is the internal code for the "volatile" implemented ?

Core Java

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Q1577. How Bitly shortens the URL ?

Web

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Q1578. Write Java code that would cause deadlock ?

Core Java

Ans. https://howtodoinjava.com/java/multi-threading/writing-a-deadlock-and-resolving-in-java/

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Q1579. How would you design a Thread Pool ?

Design

Ans. By using Executor Framework , we can create Thread pool

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Q1580. 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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Q1581. Draw uml for singleton pattern.

Design

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Q1582. 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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Q1583. How can we align a particular html element to the center using css ?

CSS

Ans. By using attribute align:center

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Q1584. 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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Q1585. 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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Q1586. How executor service is better than using primitive Threading mechanism using Thread class or runnable Interface ?

Core Java

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Q1587. 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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Q1588. 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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Q1589. 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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Q1590. Write a Program to print a pattern ?

Core Java

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