Consider the following class public class MergeSequence priv

Consider the following class: public class MergeSequence {private ArrayList values; public MergeSequence () {values = new ArrayList();} public void add(int n) {values.add (n);} public String toString () {return values.toString();}} Add a method public MergeSequence append (MergeSequence other) that creates a new sequence, appending this and the other sequence, without modifying either sequence. For example, if sequence (a) is: 14 9 16 and b is the sequence 9 7 4 9 11 then the call a.append(b) returns the sequence 14916974911 without modifying a or b. Use JUnit testing framewrork to verify the functionality of your MergeSequence Class. Implement a superclass Adult. Make two classes, Worker and Manager, that inherit from Adult. An adult has a name and a year of birth. A worker has a job title, and a manager has a salary. Write the class declarations, the constructors, and the methods toString for all classes. Supply a test program that tests these classes and methods.

Solution

Hi, Please find my implementation.

I have not implemented JUnit functionality for first question.

1)

import java.util.ArrayList;

public class MergeSequence {

  

   private ArrayList<Integer> values;

  

   public MergeSequence(){

       values = new ArrayList<>();

   }

  

   public void add(int n){

       values.add(n);

   }

  

   public String toString(){

       return values.toString();

   }

  

   //1

   public MergeSequence append(MergeSequence other){

      

       MergeSequence result = new MergeSequence();

      

       // adding current object values

       for(Integer x : this.values){

           result.add(x);

       }

      

       // adding other values

       for(Integer x : other.values){

           result.add(x);

       }

      

       // returning result

       return result;

   }

}

2)

######### Adult.java ###########

public class Adult {

  

   // instance variables

   private String name;

   private int year;

  

   // constructor

   public Adult(String name, int year){

       this.year = year;

       this.name = name;

   }

   // getters and setters

  

   public String getName() {

       return name;

   }

   public void setName(String name) {

       this.name = name;

   }

   public int getYear() {

       return year;

   }

   public void setYear(int year) {

       this.year = year;

   }

   public String toString(){

       return name+\", \"+year;

   }

}

########## Worker.java ############

public class Worker extends Adult {

  

   // instance variables

   private String title;

  

   // constructor

   public Worker(String name, int year, String title){

       // calling parent cinstructor

       super(name, year);

       this.title = title;

   }

   // getters and setters

   public String getTitle() {

       return title;

   }

   public void setTitle(String title) {

       this.title = title;

   }

  

   public String toString(){

       return super.toString()+\", \"+title;

   }

}

############ Manager.java #############

public class Manager extends Adult {

  

   // instance variables

   private double salary;

  

   // constructor

   public Manager(String name, int year, double salary){

      

       super(name, year);

       this.salary= salary;

   }

   public double getSalary() {

       return salary;

   }

   public void setSalary(double salary) {

       this.salary = salary;

   }

  

   public String toString(){

       return super.toString()+\", \"+salary;

   }

}

############## TestAdult.java ##############

public class TestAdult {

   public static void main(String[] args) {

      

       // creating Object of Worker

       Worker worker = new Worker(\"Alex\", 1992, \"Technician\");

      

       // creating Object of Manager

       Manager manger = new Manager(\"Bob\", 1993, 2314.56);

      

       System.out.println(worker);

       System.out.println(manger);

   }

}

/*

Sample run:

Alex, 1992, Technician

Bob, 1993, 2314.56

*/