How to Make an ArrayList Thread-Safe in Java Using Collections.synchronizedList()?

Making ArrayList Thread-Safe in Java: An Alternate Solution

To mitigate race conditions and ensure thread safety in your code, consider employing the Collections.synchronizedList() method. This method wraps an existing ArrayList with synchronized access, effortlessly safeguarding its operations.

Here's how to incorporate it into your existing code:

<code class="java">public class Race implements RaceListener {
    private Thread[] racers;
    // Use Collections.synchronizedList() to make the ArrayList thread-safe
    private List<RaceCar> finishingOrder = Collections.synchronizedList(new ArrayList<>(numberOfRaceCars));

    // ... Remaining code ...
}</code>

By leveraging Collections.synchronizedList(), your ArrayList, finishingOrder, becomes fully protected against concurrent access. It ensures that operations such as adding or removing elements won't lead to unpredictable behavior or data corruption when multiple threads contend for access.

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