STEP 1: Understand the UML Diagram STEP 2: Build the Inheritance Hierarchy Build

Question

STEP 1: Understand the UML Diagram

STEP 2: Build the Inheritance Hierarchy

Build the class structure shown in the UML diagram. Remember to include getters and setters for each class attribute.

STEP 3: Implement Logic for HotRod Class

Hint: To generate a random number, use the following code, which returns a random number from 0 to 1:

Random rnd = new Random();

rnd.NextDouble();

STEP 4: Implement Logic for StreetTuner Class

STEP 5: Construct the Main Program

Hint: When completing the Main Class for your lab, feel free to reuse old methods from previous labs!

STEP 6: Compile and Test

When done, compile and execute your code, and debug any errors until your code is error-free.

Check your output to ensure that you have the desired output, modify your code as necessary, and rebuild.

Your code may resemble the following:

STEP 2: Build the Inheritance Hierarchy

Explanation / Answer

public abstract class Racer {

    private String name;
    private int speed;
    private Engine engine;

    public Racer() {
    }

    public Racer(String name, int speed, Engine engine) {
        this.name = name;
        this.speed = speed;
        this.engine = engine;
    }

    abstract boolean isDead();

    public String toString() {
        return " Racer Name  : " + this.getName()
             + " Speed       : " + this.getSpeed()
+ getEngine().toString();
    }

    public String getName() {
        return name;
    }

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

    public int getSpeed() {
        return speed;
    }

    public void setSpeed(int speed) {
        this.speed = speed;
    }

    public Engine getEngine() {
        return engine;
    }

    public void setEngine(Engine engine) {
        this.engine = engine;
    }
}
public class Engine {

    private int cylinders;
    private int horsePower;

    public Engine() {
    }

    public Engine(int cylinders, int horsePower) {
        this.cylinders = cylinders;
        this.horsePower = horsePower;
    }

    public String toString() {
        return " **Engine Information**"
                + "   Cylinders   : " + this.getCylinders()
                + "   Horse Power : " + this.getHorsePower();
    }

    public int getCylinders() {
        return cylinders;
    }

    public void setCylinders(int cylinders) {
        this.cylinders = cylinders;
    }

    public int getHorsePower() {
        return horsePower;
    }

    public void setHorsePower(int horsePower) {
        this.horsePower = horsePower;
    }
}

public class HotRod extends Racer {

    private boolean blower;

    public HotRod() {
    }

    public HotRod(String name, int speed, Engine engine, boolean blower) {
        super(name, speed, engine);
        this.blower = blower;
    }

    boolean isDead() {
        java.util.Random rnd = new java.util.Random();
        boolean dead = false;
        
        if (super.getSpeed() > 50 && rnd.nextDouble() > 0.6) {
            if (super.getEngine().getHorsePower() < 300 && this.blower==true) {
                dead = false;
            } else {
                dead = true;
            }
        } else if (super.getSpeed() > 100 && rnd.nextDouble() > 0.4) {
            if (super.getEngine().getHorsePower() >= 300 && this.blower == true) {
                dead = true;
            } else {
                dead = false;
            }
        } else {
            dead=false;
        }

        return dead;
    }

    public String toString() {
        return " **************** Racer Information ****************"
                + super.toString()
                + " Blower      : " + this.isBlower();
    }

    public boolean isBlower() {
        return blower;
    }

    public void setBlower(boolean blower) {
        this.blower = blower;
    }
    
}
public abstract class Racer {

    private String name;
    private int speed;
    private Engine engine;

    public Racer() {
    }

    public Racer(String name, int speed, Engine engine) {
        this.name = name;
        this.speed = speed;
        this.engine = engine;
    }

    abstract boolean isDead();

    public String toString() {
        return " Racer Name  : " + this.getName()
             + " Speed       : " + this.getSpeed()
+ getEngine().toString();
    }

    public String getName() {
        return name;
    }

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

    public int getSpeed() {
        return speed;
    }

    public void setSpeed(int speed) {
        this.speed = speed;
    }

    public Engine getEngine() {
        return engine;
    }

    public void setEngine(Engine engine) {
        this.engine = engine;
    }
}

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