Question

Car Vehicle -numPassangers:int Constructor -plateNo: String -owner:Owner Constructor getters setters toString // returns the name and owner as a string toString// returns vehicle information together with Car info Owner Truck -load:double // e.g., tons -tcID: int Constructor getter Constructor Implement Vehicle, Owner, Car and Truck classes Create a Car and Truck instance Print them by calling toString() methods toString // returns vehicle information together with trucks info

Answer 1

class Owner {
    private int tcID;

    public Owner(int tcID){
        this.tcID = tcID;
    }
    public int getTcID() {
        return this.tcID;
    }
    public void setTcID(int tcID) {
        this.tcID = tcID;
    }
    public String toString() {
        return "Owner: " + tcID;
    }
}

class Vehicle {
    private String plateNo;
    private Owner owner;

    public Vehicle(String plateNo, Owner owner){
        this.plateNo = plateNo;
        this.owner = owner;
    }
    public String getPlateNo() {
        return this.plateNo;
    }
    public void setPlateNo(String plateNo) {
        this.plateNo = plateNo;
    }
    public Owner getOwner() {
        return this.owner;
    }
    public void setOwner(Owner owner) {
        this.owner = owner;
    }
    public String toString() {
        return "plateNo: " + plateNo + ", " + owner;
    }
}

class Car exteds Vehicle {
    private int numPassengers;

    public Car(String plateNo, Owner owner, int numPassengers){
        super(plateNo, owner);
        this.numPassengers = numPassengers;
    }
    public String toString() {
        return super.toString() + ", numPassengers=" + numPassengers;
    }
}


class Truck exteds Vehicle {
    private double load;

    public Truck(String plateNo, Owner owner, double load){
        super(plateNo, owner);
        this.load = load;
    }
    public String toString() {
        return super.toString() + ", load=" + load;
    }
}

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