calling a private constructor

[cmrhema]

Hello
I have created a class also a constructor which is (should be, one of the conditions) private.
Now I am supposed to call it in the main program. My team leader says there is a trick to call it. I can call the variable j(as it is static). but not con.
Please help me out.
[code=cpp]
public class con
{
private con()
{
Console.WriteLi ne("private constructor");
}
public static int j = 5;
}
}
[/code]
Thanking you
cmrhema

[weaknessforcats]

This is C#.

I am moving this to the .NET forum.

[Plater]

You would need to make a public wrapper for that constructor I think

so like:

public class myclass
{
   public myclass(string temp)
   {
      return myclass();
   }
   private myclass()
   {//private constructor
   }
}

[Frinavale]

You would need to make a public wrapper for that constructor I think

so like:

public class myclass
{
   public myclass(string temp)
   {
      return myclass();
   }
   private myclass()
   {//private constructor
   }
}

I'm just wondering why you would want to have a private constructor only to expose it publicly? Why not just make it public since you need to call it in another function anyways?

-Frinny

[r035198x]

You would need to make a public wrapper for that constructor I think

so like:

public class myclass
{
   public myclass(string temp)
   {
      return myclass();
   }
   private myclass()
   {//private constructor
   }
}

Erm, constructors cannot return a value.

Perhaps you meant something like

[CODE=css]using System;
public class myclass {
public myclass():this( "") {

}
private myclass(String s) {
Console.WriteLi ne("Private constructor called");
}
public static void Main() {
new myclass();
}
}[/CODE]

[Plater]

Oops, yeah. I knew there was something funny about it but I was moving really quick at the time

Erm, constructors cannot return a value.

Perhaps you meant something like

[CODE=css]using System;
public class myclass {
public myclass():this( "") {

}
private myclass(String s) {
Console.WriteLi ne("Private constructor called");
}
public static void Main() {
new myclass();
}
}[/CODE]

[cmrhema]

Erm, constructors cannot return a value.

Perhaps you meant something like

[CODE=css]using System;
public class myclass {
public myclass():this( "") {

}
private myclass(String s) {
Console.WriteLi ne("Private constructor called");
}
public static void Main() {
new myclass();
}
}[/CODE]

Thanks for the reply

Yes I exactly meant very similiar thing. Infact I should write a method that should return a value. The only condition was that I should create a class and a private constructor inside it. Thereafter call in the main function.
I tried the above but it did not call.

[r035198x]

Thanks for the reply

Yes I exactly meant very similiar thing. Infact I should write a method that should return a value. The only condition was that I should create a class and a private constructor inside it. Thereafter call in the main function.
I tried the above but it did not call.

I didn't try it last night but I've just tried it now and it works.
Something must be rotten in the state of Denmark then.

[cmrhema]

I didn't try it last night but I've just tried it now and it works.
Something must be rotten in the state of Denmark then.

Sorry ro35198x
It works So silly of me to forget "static" main

thank you
regards
cmrhema

[r035198x]

Sorry ro35198x
It works So silly of me to forget "static" main

thank you
regards
cmrhema

No need to apologize for that static. What you need to apoligize for is spelling my name wrong.
It's r035198x not ro35..whatever.

[cmrhema]

No need to apologize for that static. What you need to apoligize for is spelling my name wrong.
It's r035198x not ro35..whatever.

Hello
r035198x
I was about to edit it(your name) because I wanted to add one more question to the problem.

Now I need to call a method inside the private constructor and I should call from the main. Kindly help

using System;
public class myclass {
    public myclass():this("") {
        
    }
    private myclass(String s) {
// A method to be added here with a return value
        Console.WriteLine("Private constructor called");
    }
    public static void Main() {
        new myclass();
// need to call the method and value here
    }
}

Thank you r035198x once again

regards
cmrhema

[Plater]

Now I need to call a method inside the private constructor and I should call from the main. Kindly help

I am assuming you mean you need the private constructor to call a method?
Just create another one in the class (mark it private if you want)
And tell the private constructor to call it.

This is starting to sound like a homework/project for school though.

[r035198x]

...
This is starting to sound like a homework/project for school though.

And for homework we really like to see some effort first.

[cmrhema]

And for homework we really like to see some effort first.

should have replied long long ago.
This is what I wanted

using System;
using System.Collecti ons.Generic;
using System.Text;

namespace constructor
{
class Program
{
static void Main(string[] args)
{

myclass ji = myclass.con();

}
}
public class myclass
{

public myclass()
: this("")
{
}
private myclass(string a)
{
Console.WriteLi ne("private constructor opened");


a = "static";


}
public static myclass con()
{

Console.WriteLi ne("ccheckin insided static");

return new myclass();

}

}
}

[r035198x]

should have replied long long ago.
This is what I wanted

using System;
using System.Collecti ons.Generic;
using System.Text;

namespace constructor
{
class Program
{
static void Main(string[] args)
{

myclass ji = myclass.con();

}
}
public class myclass
{

public myclass()
: this("")
{
}
private myclass(string a)
{
Console.WriteLi ne("private constructor opened");


a = "static";


}
public static myclass con()
{

Console.WriteLi ne("ccheckin insided static");

return new myclass();

}

}
}

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