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Home >> Interview Question >> C# >> Post New Question Subscribe to Interview Questions

What is public, static and void?

Posted By :volvo     Posted Date :December 25, 2013    Points :40   Category :C# 
public :The keyword public is an access modifier that tells the C# compiler that the Main method is accessible by anyone.

static :The keyword static declares that the Main method is a global one and can be called without creating an instance of the class. The compiler stores the address of the method as the entry point and uses this information to begin execution before any objects are created.

void : The keyword void is a type modifier that states that the Main method does not return any value.

You can also find related Interview Question to What is public, static and void?  below: 

Consider the following code:

public class Example extends Thread
{
public void run()
{
System.out.println ("Hello");
}

public static void main (String args[])
{
new Example();
}
}

Select the correct option regarding the preceding code ?

  
1, The code will not compile.
2, The code will compile but will not execute.
3, The code will compile, execute, and display Hello as the output.
4, The code will compile, execute, but will not display anything.

Answer : 4 (More...)

Consider the following two classes:

public class Example1
{
public static int num;
static
{
num=5;
}
}


public class Example2
{
public static void main(String[] args)
{
System.out.println(Example1.num);
}
}

Select the correct option regarding the preceding classes.?

  
1, The Example2 class will execute without any output.
2, The Example2 class will execute with the following output:5

3, The Example2 class will not compile as it does not calls the constructor of the Example 1 class.
4, The Example2 class will not execute as it does not calls the constructor of the Example 1 class.

Answer : 2 (More...)

Difference between type constructor and instance constructor? What is static constructor, when it will be fired? And what is its use?

  
(Class constructor method is also known as type constructor or type initializer)
Instance constructor is executed when a new instance of type is created and the class constructor is executed after the type is loaded and before any one of the type members is accessed. (It will get executed only 1st time, when we call any static methods/fields in the same class.) Class constructors are used for static field initialization. Only one class constructor per type is permitted, and it cannot use the vararg (variable argument) calling convention. (More...)

What is the difference between NULL AND VOID pointer?

  
NULL can be value for pointer type variables.
VOID is a type identifier which has not size.
NULL and void are not same. Example: void* ptr = NULL; (More...)

What is the Scope of public/private/friend/protected/protected friend?

  
Scope of public/private/friend/protected/protected friend.

Visual Basic/Visual C#
Public/public All members in all classes and projects.

Private/private Members of the current class only.

Friend/internal All members in the current project.

Protected/protected All members in the current class and in classes derived from this member's class. Can be used only in member definitions, not for class or module definitions.

Protected Friend/protected internal All members in the current project and all members in classes derived from this member's class. Can be used only in member definitions, not for class
or module definitions. (More...)

How to make SharePoint website made available for public?

  
By default all the website created in SharePoint are private,However If you want your site to be a public Web site, enable anonymous access for the entire site. Then you can give out your URL to anybody in your business card, e-mail or any other marketing material. The URL for your Web site will be http://WebsiteName.wss.bcentral.comHence, please take special care to name your site.These Web sites are ideal for information and knowledge intensive sites and/or sites where you need to have shared Web workspace. Remember: Under each parent Web site, you can create up to 10 sub-sites each with unique permissions, settings and security rights. (More...)

Can you declare an override method to be static if the original method is not static?

  
No. The signature of the virtual method must remain the same.
(Note: Only the keyword virtual is changed to keyword override). (More...)

Is it possible to have a static indexer in C#?

  
No. Static indexers are not allowed in C#. (More...)

What is Static Constructor?

  
It is invoked when the instance of the class is created. (More...)

What is dynamic binding ? How is it different from static binding?

  
With dynamic binding, the decision on which object method to call is made at runtime.Dynamic binding is polymorphism. with static binding, the decision to on which method to call is made at compile time.c# uses static binding as the default method dispatching mechanism. (More...)

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