Interview Questions

Q:

What is JAR file?

Answer

A JAR file (short for Java Archive) is a ZIP file used to distribute a set of Java classes. It is used to store compiled Java classes and associated metadata that can constitute a program

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Subject: Java

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Q:

What is the meaning of ABAP editor integrated with ABAP data dictionary?

Answer

ABAP Editor: Tool in the ABAP Workbench in which you enter the source code of ABAP programs and check their syntax. You can also navigate from the ABAP Editor to the other tools in the ABAP Workbench.

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Subject: ABAP

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Q:

What is the purpose of overriding toString() method?

Answer

we can override tostring() method to return String representation of our object data

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Subject: Java

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Q:

What is a MAC Address?

Answer

MAC- Media Access Control .its a unique identifier defined for certain hardware/network adapters

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Q:

What is a view?

Answer

It is virtual table which is defined as a stored procedure based on one or more tables.

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Subject: Oracle

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Q:

A database is used to

A) store data B) modify data
C) extract data D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

A database is used to store, modify, extract and to search for the data within it.

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Q:

What are instance variables?

Answer Instance variables are those which are defined at the class level. Instance variables need not be initialized before using them as they are automatically initialized to their default values.
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Subject: Java

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Q:

If you have 10000 records in your file, which method you use in BDC?

Answer

Call transaction is faster than session method. But usually we use session method in real time…because we can transfer large amount of data from internal table to database and if any errors in a session, then process will not complete until session get correct.

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Subject: ABAP

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