Interview Questions

Q:

What is session storage and how can you create one?

Answer

Session storage is same like local storage but the data is valid for a session. In simple words the data is deleted as soon as you close the browser.


To create a session storage you need to use “sessionStorage.variablename” . In the below code we have a created a variable called as “clickcount”.


If you refresh the browser the count increases. But if you close the browser and start again the “clickcount” variable starts from zero.


if(sessionStorage.clickcount)


{


sessionStorage.clickcount=Number(sessionStorage.clickcount)+1;


}


else


{


sessionStorage.clickcount = 0;


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1 2043
Q:

What is the use of overloading ? or why overloading?

Answer

By using overloading we can add new functionality to the sub class.

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Subject: Java

0 2042
Q:

How do you decide when to use HashMap and when to use TreeMap ?

Answer

For inserting, deleting, and locating elements in a Map, the HashMap offers the best alternative. If, however, you need to traverse the keys in a sorted order, then TreeMap is your better alternative. Depending upon the size of your collection, it may be faster to add elements to a HashMap, then convert the map to a TreeMap for sorted key traversal.


 

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Subject: Java

1 2041
Q:

What is Constructor?

Answer

Constructor is not a special method.


Constructor is block of code that is executed automatically whenever object of the class is created.

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Subject: Java

0 2040
Q:

What are wrapped classes ?

Answer

Wrapped classes are classes that allow primitive types to be accessed as objects.

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Subject: Java

0 2040
Q:

In which of the following cases will total revenue increase?

A) Price rises and demand is inelastic B) Price falls and supply is inelastic
C) Price rises and demand is elastic D) Price falls and demand is inelastic
 
Answer & Explanation Answer: A) Price rises and demand is inelastic

Explanation:

In the case of, "Price rises and demand is inelastic", the total revenue increases.

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

1 2038
Q:

What is web portal?

Answer

Web portal is a business gateway, It organizes business operations.


Ex: Online shopping portals, Job portals etc...


 

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Subject: Web Technology

0 2037
Q:

What is polymorphism?

Answer

It is the ability of an object to behave differently on different situations for the same message.

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Subject: Java

0 2037