Question

EX 7.13. Create an interface called Visible that includes twomethods: makeVisible and makelnvisible. Both methods should takeno parameters and should return a Boolean result. Describe how aclass might implement this interface.public interface Visible{public: boolean makeVisibleO;public boolean makelnvisibleO;

Answer 1

Answer:

public class Icon implements Visible

{

       // instance variable

      //Constructor variable

      Public Icon()

      {  

         //implementation

                                      }

     //two methods will be implemented make visible and makeInvisible with the signage and return type

       //displayed below

\        public boolean makeVisible()

        {

                    //the implementation is registered here

      public boolean makeInvisible()

      {       //implemetation will be here

                                                              }

       //other methods are of this type

Explanation:

Create an interface called Visible that includes twomethods: makeVisible and makelnvisible. Both methods should takeno parameters and should return a Boolean result. Describe how aclass might implement this interface.public interface Visible{public: boolean makeVisibleO;public boolean makelnvisibleO;

The above can be executed as a javascript

public class Icon implements Visible

{

       // instance variable

      //Constructor variable

      Public Icon()

      {  

         //implementation

                                      }

     //two methods will be implemented make visible and makeInvisible with the signage and return type

       //displayed below

\        public boolean makeVisible()

        {

                    //the implementation is registered here

      public boolean makeInvisible()

      {       //implemetation will be here

                                                              }

       //other methods are of this type