10. prototype mode

Prototype:

In a A = new A (); a B = A; it is to pass the reference instead of passing the value reference.

We add the clone () method to a to pass the value. This is the prototype.

 

//Prototype

Abstract class prototype

{

Private string ID;

Public prototype (string ID)

{

This. ID = ID;

}

Public String ID

{

Get {return ID ;}

}

// The key to an abstract class is to use this virtual method.

Public abstract prototype clone ();

}

//Specific prototype

Class concreteprototypel: Prototype

{

Public concreteprototypel (string ID)

: Base (ID)

{}

// Implements shortest cloning, copying value types, copying references, but not referencing objects

Public override prototype clone ()

{

Return (prototype) This. memberwiseclone ();

}

}

Program:

Concreteprototypelp1 = new concreteprototypel ("I ");

Concreteprototypel C1 = (concreteprototypel) p1.clone ();

Console. writeline ("cloned: {0}", c1.id );

 

Deep cloning:

//Work Experience

Class workexperience

{

Private string workdate;

Public String workdate

{

Get {return workdate ;}

Set {workdate = value ;}

}

 

Private string company;

Public String Company

{

Get {return company ;}

Set {Company = value ;}

}

// Clone the instance by referencing this strength

Public object clone ()

{

Return (object) This. memberwiseclone ();

}

}

Resume:

Classresume

{

Private string name;

Private string sex;

Private string age;

Private workexperience work;

 

Public resume (string name)

{

This. Name = Name;

Work = new workexperience ();

}

// Provides a private constructor for the clone method to clone work experience data

Privateresume (workexperience work)

{

This. Work = (workexperience) work. Clone ();

}

 

Public void setpersonalinfo (string sex, string age)

{

This. Sex = sex;

This. Age = age;

}

Public void setworkexperience (string workdate, string Company)

{

Work. workdate = workdate;

Work. Company = company;

}

Public void display ()

{

Console. writeline ("{0} {1} {2}", name, sex, age );

Console. writeline ("work experience: {0} {1}", work. workdate, work. Company );

}

 

Public object clone ()

{

Resume OBJ = New resume (this. Work );

OBJ. Name = This. Name;

OBJ. Sex = This. sex;

OBJ. Age = This. Age;

Return OBJ;

}

}

Program:

Class Program

{

Static void Main (String [] ARGs)

{

Resume A = New resume ("laruence ");

A. setpersonalinfo ("male", "29 ");

A. setworkexperience ("1998-2000", "XXX company ");

 

Resume B = (resume) A. Clone ();

B. setworkexperience ("1998-2006", "yyy company ");

 

A. Display ();

B. Display ();

 

Console. readkey ();

}

}