Question

*OBJECT ORIENTED PROGRAMMING*

* JAVA PROGRAMMING*

Create a program that simulates a race between several vehicles.

Details don't matter must have the following:

• Design and implement an inheritance hierarchy that includes Vehicle as an abstract superclass and several subclasses.
  • Include a document containing a UML diagram describing your inheritance hierarchy
• Include at least one interface that contains at least one method that implementing classes must implement.
• Include functionality to write the results of the race to a file; this will require Exception handling.
• Utilize threads to ensure that all race vehicles are moving in turn.

Learning Outcomes

• The student will be able to code a simple Object-oriented application that uses the primitive data types, arithmetic, selection, repetition, and relational operators along with creating and using arrays and ArrayLists.
• The student will be able to describe and implement the concept of an interface and recognize when and why to use interfaces along with creating inheritance hierarchies.
• The student will be able to throw and catch exceptions and create multi-threaded programs.

Answer 1

This will be the program for the following:

public class RaceCar extends Thread
{
private int finish;
private String name;

public RaceCar(int finish, String name)
{
this.finish = finish;
this.name = name;
}

public void run()
{
for(int i = 1; i <= finish; i++)
{
int time = (int) (Math.random() * 6000);
try
{
Thread.sleep(time);
}catch(InterruptedException m)
{}
System.out.println(name + " " + i);
}
System.out.println(name + " finished!");
}
}

for the main program
public class Race
{
public static void main(String [] args)
{
Thread [] cars = new Thread[5];
int laps = Integer.parseInt(args[5]);

for(int i = 0; i < cars.length; i++)
{
cars[i] = new RaceCar(laps, args[i]);
}

for(int i = 0; i < cars.length; i++)
{
cars[i].start();
}
}
}