Java Methods Full Guide In Hindi ~ Search How

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Java Methods Full Guide In Hindi

Java Introduction In Hindi

Friends kabhi kabhi hume kisi task ko apne program main kayi jgah perform karna padta hai. dosto agar hum is task ko bina method ke karenge to hume ek hi code ko kayi bar repeat karke jgah jgah likhna padega. dosto agar iske bjaye hum ek esa method bna le jo is operation ko perform karta hai. dosto esa karne se hume ek hi code ko bar bar likhne ki jarurt nahi hai. dosto hum program me jaha bhi vo task perform karna chahte hain us jga us method ko call kar sakte hain.

Friends Method basically ek block of statements hota hai. ye ek particular operation perform karta hai dosto is operation ko hum apne program me jaha bhi perform karna chahte hain waha method ka name likhkar use call karte hain or compiler us jgah method ko execute kar deta hai.

Friends println() ko java me method ka ek bhot hi accha example mana jata hai. dosto jesa ki hum sabhi jante hain ki kisi bhi java program main hume is method ko bohut bar jarurat padti hai. dosto ye method java library me define kiya gya hai. dosto is method ka kaam hota hai ki hum iske koi bhi string pass karke usko screen par print karwa sakte hain. dosto iske saath hi hum is method main variable ko pass karke unki values hi print karwa sakte hain. dosto jab bhi hume is method ki jarurat hoti hai to hum isko call karte hain or isme string ya variables pass karte hain or ye method usi jgah par execute hota hai.

Dosto agar hum java library main is method ki definition dekhenge to hum pta chalega ki hum us code ko bar bar apne program me nhi likh sakte hain or agar hum us code ko use karte hain to humara first hello world program 10 line se jada ka ho jayega.

Dosto methods program main code ko reduce karne or computer ki memory bachane ka accha medium hai saath hi methods ke use se programmers ko bhi same code bar bar nhi likhna padta hai dosto isse programmer ka time bhi bachta hai.

Structure of Method Definition In Hindi

access_specifier return_type method_name (parameters list)

{

  //  statements to be executed

}

Syntax	Explanation
access specifier	Access specifier show karta hain ki ye method kis trah ka hai. Jaise ki private, public ya protected etc.
return type	Method ka execution hone ke baad method result ke roop main kis trah ki value return karega ye hum yaha define karte hain agar humara method koi value return nhi karta to hum yaha par void likhte hain.
method name	ye method ka name hota hai. Ye pure program main unique hona chahiye.
parameters list	Ye vo variables ya values hoti hain jo hum method ko call karte time pass karte hain. Method par operation perform karta hai or result return karta hai. Ya fir apne execution ke liye inka use karta hai. Jaise agar koi addition ka method banaye to usme 2 numbers pass kar sakte hain jinko add karke method hume result return karega. hum values or variables ko comma se separate karte hain.

Method Call of Structure In Hindi

If in the same class	If in another class
methodName(arg1,arg2….);	objectName.methodName(arg1,arg2);

Example of Java Methods In Hindi

class PersonsInfo

{

   public void Separator()// our method which separates information of persons

   {

        System.out.println("-------------------------------------------------------------");

   }

    public static void main(String args[])

    {

        System.out.println("Name :  Tina   Age : 22");

        Separator();

        System.out.println("Name :  Raj    Age:23");

        Separator();    

        System.out.println("Name :  Hina   Age : 22");

        Separator();

        System.out.println("Name :  Rock       Age:23");

     }

} 

Method Overloading In Hindi

Friends jab hum bade software's develop karte hain to aisa akshar hota hai ki humare program main ek jesa kaam karne wale kayi methods hote hain. dosto in sabhi methods ka name yaad rakhna or unhe use karna bada mushkil ho jata hai. jaise ki hum alag alag trah ke data ko add karna chahte hain to uske liye hum alag alag methods banayenge. fir un methods  ko use karne ke liye hume unka name bhi memorize karna  hoga. kisi chhote se program main aisa hum easily kar sakte hain. but jab hum koi bada software develop kar hote hain to hum sabhi methods ke name yaad nhi kar sakte hain. is situation main hum method overloading use kar sakte hain.

Method overloading main jo methods ek jaisa task perform kar rahe hain un sabko hum ek hi name dete hain jaise ki alag alag addition ke methods addition hi kar rahe hain. but koi integer ko add kar rha  hai to koi double ko add kar rha hai in sabka ek hi name diya jata hai. jab hum pooch sakte hain ki agar ek jaisa name rakhenge to compiler ko pta kaise chalega ki hum konsa method call karna chahte hain.

In sabhi methods ka name same hota hai lekin in methods main parameter types or unki sankhya alag alag hoti hai jisse compiler main inhe run time par ye pta chal jata hai ki konsa method execute karna hai. jis method se arguments ho jate hain wahi method execute ho jata hai.

Example 

public class overDemo

{

     public static int sum(int  a, int b)

    {

        return a+b;

    }

    public static int sum(double x, double y)

    {

       return x+y;

    }

   

    public static void main(String args [])

    {

          System.out.println(sum(3,5));

          System.out.println(sum(3.5,5.3));

    }

}

Friends uper diye gye example main 2 sum methods hain. ek sum() method integers ko add karta hai or dusra double values ko add karta hai. method call ke duaraan agar sum() method main integers pass karte hain to integers wala sum() method execute hoga. or agar double values pass karte hain to double wala sum() method execute hoga.

Method overloading In Hindi

Friends jab hum kisi class ko inherit karte hain to hum uske sare methods ko access kar sakte hain. but kya hoga agar kisi method ki definition humari sub class ke according nahi hai. ya fir hum us method main kuch change karna chahte hain. agar aisa hai to hum super class ke kisi bhi method ko sub class main dobara define kar sakte hain. hum us method ko edit kar sakte hain taki vo sub class ke liye work kar sake. ise method overriding kehte hain.

Friends Method overriding main sub class super class wala method use nahi karna chahti hai or vo khud us method ko edit karke use karna chahti hai. aisa karke vo super class ke method ko override karti hai.

For example agar ek class hai or usme display() method hai. is class ko circle class inherit kar rahi hai. circle class area class ke display method ko use karne ki wajaye us method ko circle class ki aawashyakta ke anushar badal kar wapas kar sakti hai.

Friends jab hum kisi method ko override karte hain to hume hamesha 2 baate yaad rakhni chahiye.

1- Super class ke method ka or sub class ke method ka name same hoga.

2- Sub class ki parameter list super class ki parameter list se match honi chahiye.

Example 

class Area

{

      public  void display()

      {

           System.out.println(“Displaying area……..”);

      }

}

class circle extends Area

{

     public void display()

     {

           System.out.println(“Displaying circle…….”);

     }

     public static void main(String args[])

     {

            Area obj = new Area();

            obj.display();

           

           this.display();

     }

}

Final Words

To friends ye thi humari aaj ki post jisme humne java methods ke bare main seekha or jana. dosto aapke is post se related koi bhi questions hain to aap hume comment box main comment karke puch sakte hain. friends isi ke saath saath aap hume apne suggestions bhi bta sakte hain. or dosto post  ko share jarur kijiye Thanks

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