src/main/java/DownloadWorker.java

@@ -32,13 +32,14 @@ public class DownloadWorker implements Runnable {
 
             double down = random.nextDouble();
             downloaded = Math.min(downloaded + down, chunkStatus.getChunkSizeMB());
-            chunkStatus.setDownloadedMB(chunkStatus.getDownloadedMB() + downloaded);
+            chunkStatus.setDownloadedMB(chunkStatus.getDownloadedMB() + down);
         }
 
         chunkStatus.setCompleted(true);
         Long endTime = System.currentTimeMillis();
         chunkStatus.setEndTimeMs(endTime);
-        System.out.println("Chunk: " + chunkStatus.getChunkId() + " has completed downloading.");
+        System.out.println("Chunk: " + chunkStatus.getChunkId() +
+                " has completed downloading (" + chunkStatus.getDownloadDurationMs() +" ms)");
     }
 
 }

src/main/java/Main.java

@@ -1,5 +1,6 @@
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Random;
 
 public class Main {
     public static void main(String[] args) {
@@ -43,41 +44,27 @@ public class Main {
         ProgressMonitor monitor = new ProgressMonitor(config, chunks);
         Thread monitorThread = new Thread(monitor, "Progress-Monitor");
         
-        // TODO:
+        monitorThread.start();
-        // Start the monitor thread before starting the workers
-        // so that progress can be displayed while downloading happens.
-        //
-        // Example idea:
-        // monitorThread.start();
 
-        // 5. Start worker threads
+        for (Thread workerThread : workerThreads) {
-        // TODO:
+            workerThread.start();
-        // Start each worker thread in workerThreads.
+        }
-        // Use a loop and call start() on each thread.
 
-        // 6. Wait for workers to finish
+        for (Thread workerThread : workerThreads) {
-        // TODO:
+            try {
-        // Wait for all worker threads to complete by calling join().
+                workerThread.join();
-        // This should be done inside a try-catch block for InterruptedException.
+            } catch (InterruptedException e) {
-        //
+                System.out.println("Thread was interrupted: " + e.getMessage());
-        // Hint:
+            }
-        // for (Thread thread : workerThreads) {
+        }
-        //     thread.join();
-        // }
 
-        // TODO:
+        try {
-        // After all workers finish, the monitor thread may also need to stop.
+            monitorThread.join();
-        // Depending on how ProgressMonitor is implemented, students may:
+        }
-        // - wait for it to finish on its own, or
+        catch (InterruptedException e) {
-        // - add a stopping mechanism in ProgressMonitor later.
+            System.out.println("Thread was interrupted: " + e.getMessage());
-        //
+        }
-        // If your monitor finishes automatically, you may join it here.
 
-        // NOTE:
-        // this final report may show 0 progress because no worker has actually run yet.
-        // Until students complete the thread start/join TODOs above,
-
-        // 7. Print final report
         System.out.println();
         System.out.println("=== Final Report ===");
 

src/main/java/ProgressMonitor.java

@@ -16,16 +16,6 @@ public class ProgressMonitor implements Runnable {
 
     @Override
     public void run() {
-        // TODO:
-        // Repeatedly check chunk progress until all chunks are completed.
-        // In each loop:
-        // 1. Read the downloaded size from every chunk
-        // 2. Add all downloaded amounts to totalDownloadedMB
-        // 3. Count completed chunks
-        // 4. Print a progress message
-        // 5. If completedChunks == chunks.size(), print a final monitor message and stop
-        // 6. Otherwise sleep for monitorDelayMs and continue
-
 
         while (true) {
             double totalDownloadedMB = 0.0;
@@ -55,8 +45,10 @@ public class ProgressMonitor implements Runnable {
             );
 
 
-            // TODO:
+            if (completedChunks == chunks.size()) {
-            // If all chunks are completed, print a final message and exit the loop
+                System.out.println("download completed!");
+                break;
+            } else {
 
                 try {
                     Thread.sleep(monitorDelayMs);
@@ -66,4 +58,5 @@ public class ProgressMonitor implements Runnable {
                 }
             }
         }
+    }
 }

src/main/resources/download_config.txt

@@ -1,6 +1,6 @@
 fileName=movie.mkv
 totalSizeMB=120
-chunkCount=6
+chunkCount=10
 minStepDelayMs=80
 maxStepDelayMs=200
 minStepDownloadMB=2