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

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Q2581. Name few classes that extends Number Class ?

Ans. http://www.buggybread.com/2015/02/java-util-classes-that-inherit-number.html

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Q2582. Name few classes that extend Thread class ?

Core Java

Ans. http://www.buggybread.com/2015/02/java-threads-classes-that-inherit.html

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Q2583. Name few classes that extends Collections class ?

Ans. http://www.buggybread.com/2015/02/java-collections-classes-that-inherit.html

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Q2584. Name few Calendar related classes and Interfaces ?

Ans. http://www.buggybread.com/2015/02/java-util-calendar-classes-and.html

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Q2585. Name few abstract classes of Java collections framework ?

Ans. http://www.buggybread.com/2015/02/java-collections-abstract-classes.html

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Q2586. Name few classes that implement Cloneable interface ?

Ans. http://www.buggybread.com/2015/02/java-collections-classes-that-implement_58.html

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Q2587. Name few classes that implement Set interface ?

Ans. http://www.buggybread.com/2015/02/java-collections-classes-that-implement_78.html

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Q2588. Name few classes that implement iterable interface ?

Ans. http://www.buggybread.com/2015/02/java-collections-classes-that-implement_45.html

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Q2589. Name few classes that implement Map interface ?

Ans. http://www.buggybread.com/2015/02/java-collections-classes-that-implement_82.html

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Q2590. Name few classes that implement List interface ?

Ans. http://www.buggybread.com/2015/02/java-collections-classes-that-implement_35.html

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Q2591. Name few classes that implement Queue interface ?

Ans. http://www.buggybread.com/2015/02/java-collections-classes-that-implement_1.html

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Q2592. Name few classes that implement Collection interface ?

Ans. http://www.buggybread.com/2015/02/java-collections-classes-that-implement.html

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Rarely asked as it was introduced with Java 8.

Q2593. Name few "Optional" classes introduced with Java 8 ?

Core Java

Ans. http://www.buggybread.com/2015/01/java-optional-classes-and-interfaces.html

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Q2594. Name few Locale classes and interfaces ?

Ans. http://www.buggybread.com/2015/01/java-locale-classes-and-interfaces.html

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Q2595. Name few Hash collections classes and interfaces ?

Ans. http://www.buggybread.com/2015/01/java-hash-collections-classes-and.html

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Q2596. Name few String related classes and interfaces ?

Core Java

Ans. http://www.buggybread.com/2015/01/java-string-classes-and-interfaces.html

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Q2597. Name few Queue classes and interfaces ?

Ans. http://www.buggybread.com/2015/01/java-collections-queue-classes-and.html

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Q2598. Name few IO Stream classes and interfaces ?

Core Java

Ans. http://www.buggybread.com/2015/01/java-stream-io-classes-and-interfaces.html

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Q2599. What are few iterator classes provided by Java ?

Ans. http://www.buggybread.com/2015/01/java-iterator-classes-and-interfaces.html

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Q2600. Name few File IO related classes and interfaces ?

Core Java

Ans. http://www.buggybread.com/2015/01/java-file-io-classes-and-interfaces.html

Sample Code for File

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Q2601. Name few Error and Exception classes provided by Java ?

Ans. http://www.buggybread.com/2015/01/java-list-of-error-exception-classes.html

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Rarely asked as it was introduced with Java 8.

Q2602. What are the changes in Java.io in Java 8 ?

Core Java

Ans. http://www.buggybread.com/2015/01/migrating-to-java-8-new-classes_62.html

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Q2603. Name few Java Util classes introduced with Java 8 ?

Core Java

Ans. http://www.buggybread.com/2015/01/migrating-to-java-8-new-classes_25.html

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Rarely asked as it was introduced with Java 8.

Q2604. Name few java.lang classes introduced with Java 8 ?

Core Java

Ans. http://www.buggybread.com/2015/01/migrating-to-java-8-new-classes.html

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Q2605. What is the difference betweeen @Inject and @Autowired ?

Spring

Ans. @Autowired and @Inject are similar in terms of functionality they achieve. @Inject is part of a new Java technology called CDI that defines a standard for dependency injection whereas @Autowired is a Spring specific annotation for dependency injection.

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Q2606. How to make sure that a string contains only Numerals ?

Core Java

Ans. We can use NumberUtils.isNumber which is a part of apache commons package.

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Q2607. What is Jenkins ?

Jenkins

Ans. It is a continuous integration tool written in Java.

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Q2608. Do you know the way to remove unused imports automatically in eclipse ?

Eclipse

Ans. Select the package -> Right Click -> Source -> Organize Imports.

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Q2609. What is Nagios ?

Ans. Nagios is open source system , network and infrastructure monitoring software application. It alerts the user if anything goes wrong. Nagios is widely used as monitoring tool for enterprise applications.

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Q2610. What is the difference between Fisheye and Crucible ?

Ans. FishEye is used to extract information from source code repository whereas Crucible is used to request, perform and manage code reviews.

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