Interview Questions

Q:

How do you decide when to use ArrayList and When to use LinkedList?

Answer

If you need to support random access, without inserting or removing elements from any place other than the end, then ArrayList offers the optimal collection. If, however, you need to frequently add and remove elements from the middle of the list and only access the list elements sequentially, then LinkedList offers the better implementation.

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Subject: Java

0 2282
Q:

Demand side market failures occur when

A) supply curves do not reflect the full cost of producing a good or services B) demand curves do not reflect consumer’s full willingness to pay for goods or services
C) government imposes tax on a good or a service D) a good or service is not produced because no one demands it
 
Answer & Explanation Answer: B) demand curves do not reflect consumer’s full willingness to pay for goods or services

Explanation:

Market failure arises because it is not possible for the market to correctly weight cost and benefits in a situation in which some of the cost is completely unaccounted.

Demand-side market failures happen when demand curves do not reflect consumer’s full willingness to pay for goods or services.

Supply-side market failures occur when supply curves do not reflect the full cost of producing a good or services.

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Filed Under: Marketing and Sales
Exam Prep: Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

1 2281
Q:

What are the usages of the Command object in ADO.NET?

Answer

The following are the usages of the Command object in AD0.NET:

The Command object in AD0.NET executes a command against the database and retrieves a DataReader or DataSet object.

  =>  It also executes the INSERT, UPDATE, or DELETE command against the database.
  =>  All the command objects are derived from the DbCommand class.
  =>  The command object is represented by two classes: SqlCommand and OleDbCommand.
  =>  The Command object provides three methods to execute commands on the database:
  =>  The ExecuteNonQuery() method executes the commands and does not return any value.
  =>  The ExecuteScalar() method returns a single value from a database query.
  =>  The ExecuteReader() method returns a result set by using the DataReader object.

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Subject: .NET

0 2281
Q:

Name the framework that is used to construct application’s user interface for iOS.

Answer

The UIKit framework is used to develop application’s user interface for iOS. UIKit framework provides event handling, drawing model, windows, views, and controls specifically designed for a touch screen interface.

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Subject: IOS

1 2279
Q:

What is static initializer block? What is its use?

Answer

A static initializer block is a block of code that declares with the static keyword. It normally contains the block of code that must execute at the time of class loading. The static initializer block will execute only once at the time of loading the class only.

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Subject: Java

0 2279
Q:

How is final different from finally and finalize()?

Answer final is a modifier which can be applied to a class or a method or a variable. final class can't be inherited, final method can't be overridden and final variable can't be changed.

finally is an exception handling code section which gets executed whether an exception is raised or not by the try block code segment.

finalize() is a method of Object class which will be executed by the JVM just before garbage collecting object to give a final chance for resource releasing activity.
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Subject: Java

0 2277
Q:

The accounting process is correctly sequenced as

A) Identifying→recording→communicating B) Identifying→communicating→recording
C) Communicating→Recording→Identifying D) Recording→Communicating→Identifying
 
Answer & Explanation Answer: A) Identifying→recording→communicating

Explanation:
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Filed Under: Bank Interview
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

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Q:

why overriding finalize() method?

Answer

If constructor opens the file 


finalize() method closes that file.


 


If constructor opens the connection 


finalize() method closes that connection.


 


To perform finalization operation we must overriding finalize method.

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Subject: Java

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