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<em> makeVisible</em>()
         {
                     //the implementation is registered here
       public boolean <em>makeInvisible</em>()
       {       //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<em> makeVisible</em>()
         {
                     //the implementation is registered here
       public boolean <em>makeInvisible</em>()
       {       //implemetation will be here
                                                               }
        //other methods are of this type