Question

It's Java; the code should be the same as the output sample below; please, thank you.

Note: create a single-file solution that has multiple class definitions. Also, note that the static main() method should be a member of the Vehicle class.

Create a class called Vehicle that has the manufacturers name (type String), number of cylinders in the engine (type int), and owner (type Person given next). Then, create a class called Truck that is derived from Vehicle and has the following additional properties: the load capacity in tons (type double since it may contain a fractional part) and towing capacity in pounds (type int). Be sure your class has a reasonable complement of constructors, accessor and mutator methods, and suitably defined equals and toString methods. Write a program to test all your methods (see sample run).

The definition of the class Person follows. Completing the definitions of the methods is part of this programming project.

class Person{
private String name;
public Person()
{...}
public Person(String theName)
{...}
public Person(Person theObject)
{...}
public String getName()
{...}
public void setName(String theName)
{...}
public String toString()
{...}
public boolean equals(Object other)
{...}
}

Output sample: interactive session

Enter·manufacturar·name:Chevrolet↵ Enter·number·of·cylinders:8↵ Enter·owner·name:David↵ Enter·load:2800.0↵ Enter·towing·capacity:1000↵ Enter·1·to·change·vehicle·properties,·2·to·print·and·10·to·quit:2↵ main↵ Manufacturer:·Chevrolet·Cylinders:·8·Name:·David·Load·Capacity:·2800.0·lbs·Tow·Capacity:·1000·pounds↵ Enter·1·to·change·vehicle·properties,·2·to·print·and·10·to·quit:1↵ Enter·1·to·change·manufacturar,·2·to·change·cylinders,·3·to·change·owner,·4·to·change·load,·5·to·change·towing·capacity,·or·any·other·number·to·go·back·to·main·menu:4↵ Enter·load:50000↵ Enter·1·to·change·vehicle·properties,·2·to·print·and·10·to·quit:1↵ Enter·1·to·change·manufacturar,·2·to·change·cylinders,·3·to·change·owner,·4·to·change·load,·5·to·change·towing·capacity,·or·any·other·number·to·go·back·to·main·menu:5↵ Enter·towing·capacity:1000↵ Enter·1·to·change·vehicle·properties,·2·to·print·and·10·to·quit:2↵ main↵ Manufacturer:·Chevrolet·Cylinders:·8·Name:·David·Load·Capacity:·50000.0·lbs·Tow·Capacity:·1000·pounds↵ Enter·1·to·change·vehicle·properties,·2·to·print·and·10·to·quit:10↵ ↵

Answer 1

Note: Here whole code and class is done as per your request, but if you have any doubt or issue regarding this you can ask me or post the issue, i will change code according to your need.

Alos include try{...} catch() {...} exception for better run the code.

person.java

public class Person {

        private String name;
        private Person obj;
        
        
        public Person() {
        }
        
        public Person(String theName) {
                this.name = theName;
        }
        
        public Person(Person theObject) {
                this.obj = theObject;
        }
        
        public String getName() {
                return name;
        }

        public void setName(String name) {
                this.name = name;
        }
        
        @Override
        public boolean equals(Object obj) {
                return super.equals(obj);
        }

        @Override
        public String toString() {
                return "Owner = " + name + "\n";
        }
}

Truck.java

public class Truck extends Vehicle {

        private double loadCapacity;
        private int towingCapacity;

        public Truck() {
        }

        public Truck(String manufactureName, int numOfCylinder, Person owner, double loadCapacity, int towingCapacity) {
                super(manufactureName, numOfCylinder, owner);
                this.loadCapacity = loadCapacity;
                this.towingCapacity = towingCapacity;
        }
        
        @Override
        public String toString() {
                return super.toString() + "loadCapacity = " + loadCapacity + "\ntowingCapacity = " + towingCapacity;
        }

        public double getLoadCapacity() {
                return loadCapacity;
        }

        public void setLoadCapacity(double loadCapacity) {
                this.loadCapacity = loadCapacity;
        }

        public int getTowingCapacity() {
                return towingCapacity;
        }

        public void setTowingCapacity(int towingCapacity) {
                this.towingCapacity = towingCapacity;
        }
        
        @Override
        public boolean equals(Object obj) {
                return super.equals(obj);
        }
}

Vehicle.java

import java.util.Scanner;

public class Vehicle {

        @Override
        public String toString() {
                return "manufactureName = " + manufactureName + "\nnumOfCylinder = " + numOfCylinder + "\n" + owner.toString();
        }

        private String manufactureName;
        private int numOfCylinder;
        private Person owner;

        public Vehicle() {
        }

        public Vehicle(String manufactureName, int numOfCylinder, Person owner) {
                this.manufactureName = manufactureName;
                this.numOfCylinder = numOfCylinder;
                this.owner = owner;
        }

        public String getManufactureName() {
                return manufactureName;
        }

        public void setManufactureName(String manufactureName) {
                this.manufactureName = manufactureName;
        }

        public int getNumOfCylinder() {
                return numOfCylinder;
        }

        public void setNumOfCylinder(int numOfCylinder) {
                this.numOfCylinder = numOfCylinder;
        }

        public Person getOwner() {
                return owner;
        }

        public void setOwner(Person owner) {
                this.owner = owner;
        }

        public static void main(String[] args) {
                Truck tr;
                Scanner scan = new Scanner(System.in);

                try {

                        System.out.print("Enter manufacturar Name : ");
                        String manufactureName = scan.next();

                        System.out.print("Enter number of cylinders : ");
                        int numOfCylinder = scan.nextInt();

                        System.out.print("Enter owner Name : ");
                        String owner = scan.next();

                        System.out.print("Enter load : ");
                        double loadCapacity = scan.nextDouble();

                        System.out.print("Enter towing capacity : ");
                        int towingCapacity = scan.nextInt();

                        tr = new Truck(manufactureName, numOfCylinder, new Person(owner), loadCapacity, towingCapacity);

                        int ch;
                        do {
                                System.out.println("\nEnter 1 to change vehicle properties, 2 to print and 10 to quit: ");
                                ch = scan.nextInt();

                                if (ch == 1) {
                                        System.out.println(
                                                        "\nEnter 1 to change manufacturar, 2 to change cylinders, 3 to change owner, 4 to change load,"
                                                                        + " 5 to change towing capacity, or any other number to go back to main menu: ");
                                        int editCh = scan.nextInt();

                                        switch (editCh) {

                                        case 1:
                                                System.out.print("Enter manufacturar name: ");
                                                manufactureName = scan.next();
                                                tr.setManufactureName(manufactureName);
                                                break;
                                        case 2:
                                                System.out.print("Enter number of cylinders: ");
                                                numOfCylinder = scan.nextInt();
                                                tr.setNumOfCylinder(numOfCylinder);
                                                break;
                                        case 3:
                                                System.out.print("Enter owner name: ");
                                                owner = scan.next();
                                                tr.setOwner(new Person(owner));
                                                break;
                                        case 4:
                                                System.out.print("Enter load: ");
                                                loadCapacity = scan.nextDouble();
                                                tr.setLoadCapacity(loadCapacity);
                                                break;
                                        case 5:
                                                System.out.print("Enter towing capacity: ");
                                                towingCapacity = scan.nextInt();
                                                tr.setTowingCapacity(towingCapacity);
                                                break;
                                        }

                                } else if (ch == 2)
                                        System.out.println(tr.toString());
                        } while (ch != 10);
                } catch (Exception e) {
                        System.out.println("Exception occures, again run code");
                }
                scan.close();
        }
}