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Q:

When should I use abstract classes and when should I use interfaces?

Answer

Use Interfaces when…


- You see that something in your design will change frequently.


- If various implementations only share method signatures then it is better to use Interfaces.


- You need some classes to use some methods which you don't want to be included in the class, then you go for the interface, which makes it easy to just implement and make use of the methods defined in the interface.


 


Use Abstract Class when…


- If various implementations are of the same kind and use common behavior or status then abstract class is better to use.


- When you want to provide a generalized form of abstraction and leave the implementation task with the inheriting subclass.


- Abstract classes are an excellent way to create planned inheritance hierarchies. They're also a good choice for nonleaf classes in class hierarchies.

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Subject: Java

Q:

India nationalised 14 major commercial banks in 1969 with deposits not less than 

A) Rs. 10 crore each B) Rs. 25 crore each
C) Rs. 50 crore each D) Rs. 100 crore each
 
Answer & Explanation Answer: C) Rs. 50 crore each

Explanation:
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Filed Under: Indian Economy

Q:

One of the problems in finding out National Income in India is

A) Non-monetary consumption B) Tax evasion
C) Inflation D) Conspicuous consumption
 
Answer & Explanation Answer: A) Non-monetary consumption

Explanation:
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Filed Under: Indian Economy

Q:

The Minimum Alternative Tax (MAT) was introduced in the Budget of the Government of India for the year

A) 1991-92 B) 1992-93
C) 1995-96 D) 1996-97
 
Answer & Explanation Answer: D) 1996-97

Explanation:
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Filed Under: Indian Economy

Q:

In 1955, Imperial Bank of India, a leadimg commercial bank of that time was nationalised and renamed as:

A) Central Bank of India B) Bank of India
C) Indian Bank D) State Bank of India
 
Answer & Explanation Answer: D) State Bank of India

Explanation:
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Filed Under: Indian Economy

Q:

What is the name of the group of agriculture exporting countries formed in 1986, that has put agriculture on the multi lateral trade agenda at the WTO?

A) The Cairns Group B) ASEAN
C) SCANA D) NAFTA
 
Answer & Explanation Answer: C) SCANA

Explanation:
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Filed Under: Indian Economy

Q:

Gas authority of India Ltd.(GAIL) is likely to bag equity participation in a transational pipeline project from the Caspian Sea to Central Europe. What is the name of this 3,300 km pipeline project?

A) Natural Gas Transmission Company B) SNTGN Transgar SA
C) O M V Aktiengesellschaft D) Nabucco Natural Gas Pipeline Project
 
Answer & Explanation Answer: D) Nabucco Natural Gas Pipeline Project

Explanation:
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Filed Under: Indian Economy

Q:

In India national, National Income is calculated by the method which is known as

A) the combined method B) the income method
C) the product method D) the expenditure method
 
Answer & Explanation Answer: A) the combined method

Explanation:

In India, National Income is calculated by the combined method. It combines two methods i.e product or output method and the income method. This is done to overcome the problem of deficiency of statistics. The product method endeavours to find out the net contribution to national income of all producing units. The income method adds up income and payments accruing of factors of production. This method is used in the tertiary  sector like government services banking etc and also in the commoity sector if output data is not available.

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Filed Under: Indian Economy