Abstract body

Can we declare abstract body ? Explain with simple example and the situation you would use ?
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krishna

  • Jan 19th, 2012
 

Code
  1.     public abstract class MissingMethodBodyOrDeclareAbstractSolution

    2. 

  2.     {

    3. 

  3.     public void display(String message)

    4. 

  4.     {

    5. 

  5.     System.out.println(message);

    6. 

  6.     }

    7. 

  7.     public abstract void display();

    8. 

  8.     }

    9. 

  9.  

    10. 

  10.  

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krishna

  • Jan 19th, 2012
 

Here, a ; (semicolon) is given after the method header of the first display method (with parameter). And for the second display method, keyword ‘abstract’ is not stated in the header and it doesn’t have any body also. Here it is to be noted that if a class contains an abstract method, the class must also be abstract.

Code
  1.     public abstract class MissingMethodBodyOrDeclareAbstractSolution

    2. 

  2.     {

    3. 

  3.     public void display(String message)

    4. 

  4.     {

    5. 

  5.     System.out.println(message);

    6. 

  6.     }

    7. 

  7.     public abstract void display();

    8. 

  8.     }

    9. 

  9.  

    10. 

  10.  

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