Abstract Method

Author: Ravi Poswal

Only the abstract class may define it, and a parent class may declare the implementation. Suppose you want to declare an abstract method. So It must place the “abstract” keyword before the method name.

  • It contains the method signature but not the method body.

  • All abstract methods must declare on subclasses.

  • It must be declared in an abstract class.

Code Example

abstract class Teacher {
   abstract void teach();
   void student() {
       System.out.println("He is student.");
   }
}
class College extends Teacher {
   void teach() {
       System.out.println("he is part of scholar");
   }
}
public class Main
 {
   public static void main(String[] args) 
{
      Teacher my = new College();
       my.teach(); 
       my.student(); 
   }
}
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