An abstract method
is any method inthe abstract class
cannot beinherited
has nobody
is found in asubclass and overrides methods in a superclass using the reservedword abstract

has no body.

Explanation:

An abstract method is a method which has no body.

It is contained in a class which is marked as abstract.

The implementation of such method is specified in a subclass.

For example:

//abstract class

abstract class myClass{

  /* Abstract method */  

  public abstract void mymethod(int a, int b);

}

//Concrete class extending abstract class

class Concrete extends myClass{

  public void mymethod(int a, int b){

return a+b;

  }

}

professionals can use many types of technology that can them. some examples are, computers (they research and can use for programs for data, they are also used for job applications, school work, and even to make new ideas), speedometers (can get data for unknown data), sometimes something as small as a pen (used for rough drafts, to insert data, and again job applications).