Interview Questions

Q:

Why cannot you run standard Java bytecode on Android?

Answer

Android uses Dalvik Virtual Machine (DVM) which requires a special bytecode. We need to convert Java class files into Dalvik Executable files using an Android tool called "dx". In normal circumstances, developers will not be using this tool directly and build tools will care for the generation of DVM compatible files.

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Q:

What are payroll inputs? Does it changes from company to company?

Answer

Payroll input includes: Monthly,Qtrly,Yearly payments,adjustements, recoveries etc.
Inputs can be received either from HR or finance or both.

Current month New joinees, resignees recovery's etc.

Yes, inputs changes company to company

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Q:

Which among the following command is used to implement view state

A) _VIEWSTATE B) VIEW_STATE
C) VIEWSTATE_ D) None
 
Answer & Explanation Answer: A) _VIEWSTATE

Explanation:

_VIEWSTATE is the command used to implement view state

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Filed Under: .NET
Job Role: Software Architect

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Q:

What is synchronization and why is it important ?

Answer

With respect to multithreading, synchronization is the capability to control the access of multiple threads to shared resources. Without synchronization, it is possible for one thread to modify a shared object while another thread is in the process of using or updating that object's value. This often leads to significant errors.

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Subject: Java

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Q:

Why would a company distribute its earnings through dividends to common stockholders?

Answer

Regular dividend payments are signals that a company is healthy and profitable. Also, issuing dividends can attract investors (shareholders). Finally, a company may distribute earnings to shareholders if it lacks profitable investment opportunities.

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Subject: Finance

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Q:

What is autoboxing and unboxing ?

Answer

Autoboxing is the automatic conversion that the Java compiler makes between the primitive types and their corresponding object wrapper classes. For example, converting an int to an Integer, a double to a Double, and so on. If the conversion goes the other way, this is called unboxing. 

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Subject: Java

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Q:

Describe how to step through code in .NET.

Answer

Steps to step through the code in .NET:



  1. Start the program in debug mode.

  2. When the first breakpoint is reached then step through can be done in one of the two ways:



  •  Press F10 to move to next line.

  •  Select debug menu and click on step over. This would step over the breakpoint to next level.


       3. Other options are: “Step Into” and “Step Out”.

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Subject: .NET

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Q:

What do you mean by undeclared and undefined variables ?

Answer

Difference between undeclared and undefined variables is defined as


Undeclared variables are those that do not exist in a program and are not declared. If the program tries to read the value of an undeclared variable, then a runtime error is encountered.


Undefined variables are those that are declared in the program but have not been given any value. If the program tries to read the value of an undefined variable, an undefined value is returned.

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