vat is abstract class

[kalai sundar]

can anyone explain me abt abstract class with good example?



kalai

[Niyas Ahmed Sheikh]

Abstract class is a class will have abstract methods and non-abstarct methods may also.

If you want to use abstart methods, then the class should also be abstract.

Generally abstract methods will have declaration part only. It must be implemented by the subclass which extends it.

Ex:

abstract class Super
{
  abstract public void amethod();
  abstract public void bmethod();
  public void amethod()
  {
     ...
     ...
  }
}
 
class Sub1 extends Super
{
    public void amethod()
    {
           ....
           ...
    } 
  
 
    public void amethod()
    {
           ....
           ...
    } 
}

[Niyas Ahmed Sheikh]

Sorry, in the last post I typed mistakenly. I bolded that one. It should be public void methodname(). Any method name, but not already used in the abstarct class.

abstract class Super
{  
   abstract public void amethod();  
   abstract public void bmethod();  
[B]public void amethod()  [/B]
   {    
         ... 
         ... 
    }
}

[Steve Morrow]

can anyone explain me abt abstract class with good example?

Please read the following: The Java� Tutorial - Writing Abstract Classes and Methods