Solution: Download Progress Simulator

public class DownloadSimulator {
    static class AssetDownloader implements Runnable {
        private String assetName;
        private int fileSize; 
        public AssetDownloader(String assetName, int fileSize) {
            this.assetName = assetName;
            this.fileSize = fileSize;
        }
        @Override
        public void run() {
            try {
                // We increment by 100MB per step (constant download speed)
                for (int current = 0; current <= fileSize; current += 100) {
                    System.out.println(assetName + ": " + current + "/" + fileSize + " MB");
                    // Constant latency per chunk
                    Thread.sleep(100); 
                }
                System.out.println(">>> " + assetName + " finished.");
            } catch (InterruptedException e) {
                System.out.println(assetName + " interrupted!");
            }
        }
    }
    public static void main(String[] args) {
        System.out.println("Launcher starting downloads...");
        // Larger files = More loop iterations = Longer runtime
        Runnable task1 = new AssetDownloader("Texture Pack", 1000); 
        Runnable task2 = new AssetDownloader("Sound Pack", 600);
        Runnable task3 = new AssetDownloader("Map Pack", 200);
        Thread thread1 = new Thread(task1);
        Thread thread2 = new Thread(task2);
        Thread thread3 = new Thread(task3);
        thread1.start();
        thread2.start();
        thread3.start();
        try {
            // Wait for all downloads to finish
            thread1.join();
            thread2.join();
            thread3.join();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println("Game Ready!");
    }
}