Question

Consider the following class:

//class M
public abstract class M
{ private int n;
protected double p;
public abstract void foo1(); \
} //end class M

Answer 1

The class mentioned is a class in programming or computer science. It is an abstract class with two private instance variables and one abstract method. Any class that extends this class must provide an implementation for the abstract method.

Step-by-step explanation:

The class mentioned is a class in programming or computer science. It is an abstract class, meaning that it cannot be instantiated, but it serves as a superclass for other classes that can be instantiated.

The class has two private instance variables: 'n' of type int, and 'p' of type double. It also has one abstract method called 'foo1()', which does not have a method body. This means that any class that extends this abstract class must provide an implementation for the 'foo1()' method.

Here is an example of a class that extends the 'M' class and provides an implementation for the 'foo1()' method:

public class X extends M { public void foo1() { // implementation of foo1() goes here } }

The abstract class "M" establishes a blueprint for subclasses, mandating the implementation of the abstract method "foo1()" while encapsulating its internal variables. This promotes code modularity and adherence to a common structure in derived classes.