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

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Q661. Name few classes java provides for File compression ?

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

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Q662. Name few Buffered IO classes and interfaces ?

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

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Q663. Name few Locale classes and interfaces ?

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

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_{Like Discuss Correct / Improve java util java.util locale intermediate rare}

Q664. Name few Hash collections classes and interfaces ?

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

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Q665. Name few Enum classes and interfaces provided by Java ?

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

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_{Like Discuss Correct / Improve java enums}

Q666. Name few classes java provides for memory management ?

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

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Q667. Name few annotations related classes and interfaces ?

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

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Q668. Name few Threads related classes and interfaces ?

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

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Q669. Name few Boolean classes and interfaces ?

Ans. http://www.buggybread.com/2015/01/java-data-types-double-classes-and_31.html

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Q670. Name few Double data types related classes and interfaces ?

Ans. http://www.buggybread.com/2015/01/java-data-types-double-classes-and.html

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Q671. Name few float data type related classes and interfaces ?

Ans. http://www.buggybread.com/2015/01/java-data-types-float-classes-and.html

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Q672. Name few Integer related classes and interfaces ?

Ans. http://www.buggybread.com/2015/01/java-data-types-integer-classes-and.html

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Q673. Name few long data type related classes and interfaces ?

Ans. http://www.buggybread.com/2015/01/java-data-types-long-classes-and.html

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Q674. 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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Q675. Name few Queue classes and interfaces ?

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

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Q676. 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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Q677. Name few Writer classes ?

Ans. http://www.buggybread.com/2015/01/java-output-writer-classes-and.html

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Q678. Name few Reader classes ?

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

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Q679. 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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Q680. Name few classes that are part of java.io package ?

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

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Rarely asked as it was introduced with Java 8.

Q681. 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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_{Like Discuss Correct / Improve java java 8 java.io java8}

Q682. Name few classes that are part of java.lang package ?

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

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Q683. Name few classes that are part of java.util package ?

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

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Q684. Name few Java util classes that were introduced with Java 7 ?

Ans. http://www.buggybread.com/2015/01/migrating-to-java-7-new-classes_25.html

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Q685. 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.

Q686. 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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Q687. 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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Q688. What is Jenkins ?

Jenkins

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

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_{Like Discuss Correct / Improve java jenkins Asked in 6 Companies Basic frequent}

Q689. Which SCM tools Jenkins supports ?

Jenkins

Ans. AccuRev, CVS, Subversion, Git, Mercurial, Perforce, Clearcase and RTC

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Q690. What you do to make sure that your project doesn't break in Jenkins ?

Jenkins

Ans. I make sure that I perform successful clean install on my local machine with all unit tests.
Then I make sure that I check in all code changes.
Then I do a Synchronize with repository to make sure that all required config and POM changes and any difference is checked into the repository.

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