Question

Implement a superclass Adult. Make two classes, Worker and Manager, that inherit from Adult. Each adult has a name and a year of birth. Each worker has a job title of “engineer” and each manager has a job title of “supervisor”. Write the class declarations, the constructors, and the methods toString for all classes. Supply a driver class that creates an array of Worker objects and sort them by the birth years. Moreover, create an array of Manager objects but sort them by the name.

Answer 1

Thanks for the question.

Below is the code you will be needing  Let me know if you have any doubts or if you need anything to change.

Thank You !

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public class Adult {

    private String name;
    private int yearOfBirth;

    public Adult() {
        name = "";
        yearOfBirth = 1900;
    }

    public Adult(String name, int yearOfBirth) {
        this.name = name;
        this.yearOfBirth = yearOfBirth;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getYearOfBirth() {
        return yearOfBirth;
    }

    public void setYearOfBirth(int yearOfBirth) {
        this.yearOfBirth = yearOfBirth;
    }

    @Override
    public String toString() {
        return "Name: " + getName() + ", Birth Year: " + getYearOfBirth();
    }
}

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public class Worker extends Adult {

    private static final String title = "Engineer";

    public Worker() {

    }

    public Worker(String name, int yearOfBirth) {
        super(name, yearOfBirth);
    }

    public static String getTitle() {
        return title;
    }

    @Override
    public String toString() {
        return title + ", " + super.toString();
    }
}

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public class Manager extends Adult {

    private static final String title = "Supervisor";

    public Manager() {

    }

    public Manager(String name, int yearOfBirth) {
        super(name, yearOfBirth);
    }

    public static String getTitle() {
        return title;
    }

    @Override
    public String toString() {
        return title + ", " + super.toString();
    }
}

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package f;

import four.WordList;

import java.util.Arrays;
import java.util.Comparator;

public class SortedAdults {


    public static void main(String[] args) {


        Worker[] workers = new Worker[5];
        workers[0] = new Worker("John Doe", 1982);
        workers[1] = new Worker("Peter Romanko", 1976);
        workers[2] = new Worker("Jason Gillespi", 1964);
        workers[3] = new Worker("Brian Obama", 1983);
        workers[4] = new Worker("Donald Trump", 1967);

        Manager[] managers = new Manager[5];
        managers[0] = new Manager("John Doe", 1982);
        managers[1] = new Manager("Peter Romanko", 1976);
        managers[2] = new Manager("Jason Gillespi", 1964);
        managers[3] = new Manager("Brian Obama", 1983);
        managers[4] = new Manager("Donald Trump", 1967);


        Arrays.sort(workers, new Comparator<Worker>() {
            @Override
            public int compare(Worker o1, Worker o2) {
                return o1.getYearOfBirth() - o2.getYearOfBirth();
            }
        });
        System.out.println("Sorted Workers By Birth Year: ");
        for (Worker worker : workers) {
            System.out.println(worker);
        }
        Arrays.sort(managers, new Comparator<Manager>() {
            @Override
            public int compare(Manager o1, Manager o2) {
                return o1.getName().compareTo(o2.getName());
            }
        });
        System.out.println("\nSorted Managers By Name: ");
        for (Manager manager : managers) {
            System.out.println(manager);
        }

    }
}

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