Constructor & Methods in Java with example

Constructor :

•  It has the same name as class in which it resides.
• A Constructor initializes an object upon creation .
•  Constructor doesn't have return type even void ,since it return the whole class .
• Automatic intialization is performed through the use of constructor , so we prefer constructor than method.

ex:

  class addc {
  public addc(int a,int b )
     {
   int c= a+b;
   System.out.println(c);
        }
      }
   class mdemo {
   public static void main(String[ ]  args)
        {
     addc  a1 = new addc(12,8);                        
            }
        }

Method :
         This is the general form of a method
             
           type name (parameter-list) {
                   //body of method
                        }

           ex:

           class addc {

          public int addc(int a,int b )
                {
             int c= a+b;
             return c;                                      // Method can have return type
                  }
              }
         class mdemo {
         public static void main(String[ ]  args)
                 {
         addc  a1 = new addc( );  
          int d = a1.addc(12,8);                 // Getting the result throw by return
           System.out.println(d);                  
              }
           }

Here, type specifies the type of data returned by the method .if the method does not return a value, its return type must be void.



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