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| Author | SHA1 | Date | |
|---|---|---|---|
 HesamGhazi
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Main.java
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# Advanced Programming Assignment 8
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* Name: *Hesam Ghazi*
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* Student Number: *403222015*
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* Course: *Advanced Programming*
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---
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# Theoretical Questions
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## 1. `start()` vs `run()`
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### Question 1: What output do you get from the program? Why?
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The program prints something similar to the following:
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```
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Calling run()
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Running in: main
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Calling start()
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Running in: Thread-2
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```
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When `t1.run()` is called, the `run()` method executes like a normal Java method. It does **not** create a new thread, so it runs inside the current thread, which is the **main** thread.
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When `t2.start()` is called, the Java Virtual Machine creates a **new thread**, and that thread executes the `run()` method independently. Therefore, `Thread.currentThread().getName()` returns `"Thread-2"`.
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---
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### Question 2: What's the difference in behavior between calling `start()` and `run()`?
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| `start()` | `run()` |
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| -------------------------------------------------- | ------------------------------------------- |
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| Creates a new thread. | Does not create a new thread. |
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| Executes `run()` concurrently. | Executes `run()` like a normal method call. |
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| The JVM schedules the new thread. | Runs immediately in the current thread. |
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| Allows multiple threads to execute simultaneously. | No parallelism or concurrency occurs. |
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For example:
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```java
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Thread thread = new Thread(new MyRunnable());
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thread.run(); // Executes on the current thread (main)
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thread.start(); // Executes on a new thread
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```
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Using `start()` is essential when we want to perform tasks concurrently.
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---
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# 2. Daemon Threads
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### Question 1: What output do you get from the program? Why?
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A typical output is:
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```
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Main thread ends.
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Daemon thread running...
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Daemon thread running...
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```
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Sometimes only the following is printed:
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```
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Main thread ends.
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```
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This happens because daemon threads are **background threads**. When the main (user) thread finishes and no other user threads remain, the JVM automatically terminates all daemon threads, even if they have not completed their work.
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Since the daemon thread sleeps for 500 ms in every iteration, it may be terminated before printing all twenty messages.
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---
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### Question 2: What happens if you remove `thread.setDaemon(true)`?
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If `thread.setDaemon(true)` is removed, the thread becomes a **user thread**.
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In this case, the JVM waits until the thread completes all twenty iterations before terminating the program.
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The output becomes similar to:
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```
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Main thread ends.
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Daemon thread running...
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Daemon thread running...
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...
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Daemon thread running...
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```
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The program will continue running for approximately **10 seconds** (20 × 500 ms).
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---
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### Question 3: What are some real-life use cases of daemon threads?
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Daemon threads are commonly used for background services that support the application but are not essential to its primary functionality.
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Examples include:
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* Garbage collection
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* Automatic cache cleanup
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* Logging services
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* Monitoring system resources
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* Background file synchronization
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* Session timeout checking
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* Periodic health checks
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* Scheduled maintenance tasks
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These tasks should stop automatically when the application exits, making daemon threads an appropriate choice.
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---
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# 3. A Shorter Way to Create Threads
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### Question 1: What output do you get from the program?
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The program prints:
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```
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Thread is running using a ...!
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```
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This message is printed by the newly created thread after `thread.start()` is called.
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---
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### Question 2: What is the `() -> { ... }` syntax called?
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The syntax
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```java
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() -> {
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...
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}
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```
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is called a **Lambda Expression**.
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Lambda expressions were introduced in **Java 8** as a concise way to implement functional interfaces such as `Runnable`.
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The previous code
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```java
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Thread thread = new Thread(() -> {
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System.out.println("Thread is running using a ...!");
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});
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```
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is equivalent to
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```java
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Thread thread = new Thread(new Runnable() {
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@Override
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public void run() {
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System.out.println("Thread is running using a ...!");
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}
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});
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```
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---
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### Question 3: How is this code different from creating a class that extends `Thread` or implements `Runnable`?
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There are three common approaches for creating a thread.
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### 1. Extending `Thread`
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```java
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class MyThread extends Thread {
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@Override
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public void run() {
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System.out.println("Running...");
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}
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}
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```
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**Advantages**
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* Easy for simple examples.
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**Disadvantages**
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* Java supports only single inheritance.
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* The task is tightly coupled with the thread.
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---
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### 2. Implementing `Runnable`
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```java
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class MyRunnable implements Runnable {
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@Override
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public void run() {
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System.out.println("Running...");
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}
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}
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```
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**Advantages**
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* Better object-oriented design.
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* Allows inheritance from another class.
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* The task and the thread are separated.
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---
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### 3. Using a Lambda Expression
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```java
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Thread thread = new Thread(() -> {
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System.out.println("Running...");
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});
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```
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**Advantages**
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* Very concise and readable.
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* Eliminates unnecessary boilerplate code.
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* Ideal for short tasks.
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* Still implements the `Runnable` interface internally.
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---
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## Conclusion
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Lambda expressions are the preferred choice for short and simple thread tasks because they produce cleaner and more maintainable code. For larger or reusable tasks, implementing `Runnable` is generally considered the best practice due to better separation of responsibilities. Extending `Thread` is the least flexible approach and is usually reserved for special cases.
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@@ -0,0 +1,158 @@
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import java.util.List;
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public final class ConsoleUI {
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private static final int BAR_WIDTH = 40;
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private ConsoleUI() {
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}
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/**
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* Clears the console.
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*/
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public static void clearScreen() {
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System.out.print("\033[H\033[2J");
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System.out.flush();
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}
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/**
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* Prints the application header.
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*/
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public static void printHeader(String fileName, int totalSizeMB, int chunkCount) {
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System.out.println("============================================================");
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System.out.println(" SIMULATED DOWNLOAD MANAGER");
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System.out.println("============================================================");
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System.out.printf("File : %s%n", fileName);
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System.out.printf("Size : %d MB%n", totalSizeMB);
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System.out.printf("Chunks : %d%n", chunkCount);
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System.out.println("============================================================");
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System.out.println();
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}
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/**
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* Prints overall download statistics.
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*/
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public static void printOverallProgress(
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double downloaded,
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double total,
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double speed,
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double etaSeconds) {
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double percent = total == 0
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? 100
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: downloaded * 100.0 / total;
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System.out.println("Overall Progress");
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System.out.println(buildProgressBar(percent));
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System.out.printf("Downloaded : %.1f / %.1f MB%n", downloaded, total);
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System.out.printf("Progress : %.1f%%%n", percent);
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System.out.printf("Speed : %.2f MB/s%n", speed);
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System.out.printf("ETA : %s%n", formatTime(etaSeconds));
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System.out.println();
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}
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/**
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* Prints each chunk's progress.
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*/
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public static void printChunks(List<ChunkStatus> chunks) {
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System.out.println("Chunks");
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for (ChunkStatus chunk : chunks) {
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double percent = chunk.getProgressPercentage();
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System.out.printf(
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"Chunk %-2d %s %6.1f%% %s%n",
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chunk.getChunkId(),
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buildProgressBar(percent),
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percent,
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chunk.isCompleted() ? "✓" : ""
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);
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}
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System.out.println();
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}
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/**
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* Prints the final report.
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*/
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public static void printFinalReport(List<ChunkStatus> chunks) {
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System.out.println();
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System.out.println("============================================================");
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System.out.println(" FINAL REPORT");
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System.out.println("============================================================");
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for (ChunkStatus chunk : chunks) {
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System.out.printf(
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"Chunk %d : %.1f / %.1f MB | %.2f sec | %s%n",
|
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chunk.getChunkId(),
|
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chunk.getDownloadedMB(),
|
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chunk.getChunkSizeMB(),
|
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chunk.getDownloadDurationMs() / 1000.0,
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chunk.isCompleted() ? "Completed" : "Incomplete"
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);
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}
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System.out.println("============================================================");
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}
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/**
|
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* Builds a text progress bar.
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*/
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public static String buildProgressBar(double percent) {
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percent = Math.max(0, Math.min(100, percent));
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int filled = (int) Math.round((percent / 100.0) * BAR_WIDTH);
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|
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StringBuilder sb = new StringBuilder();
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sb.append("[");
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|
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for (int i = 0; i < BAR_WIDTH; i++) {
|
||||
|
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if (i < filled) {
|
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sb.append("█");
|
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} else {
|
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sb.append("░");
|
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}
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|
||||
}
|
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|
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sb.append("]");
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return sb.toString();
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}
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/**
|
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* Formats seconds as HH:MM:SS.
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*/
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public static String formatTime(double seconds) {
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|
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if (seconds <= 0 || Double.isInfinite(seconds) || Double.isNaN(seconds)) {
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return "--:--:--";
|
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}
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int total = (int) Math.round(seconds);
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int hours = total / 3600;
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int minutes = (total % 3600) / 60;
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int secs = total % 60;
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return String.format("%02d:%02d:%02d", hours, minutes, secs);
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}
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|
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/**
|
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* Thread-safe logging method.
|
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*/
|
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public static synchronized void log(String message) {
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System.out.println(message);
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}
|
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|
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}
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@@ -0,0 +1,89 @@
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/**
|
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* Utility class for calculating download statistics such as
|
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* percentage, speed, and estimated remaining time (ETA).
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*/
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public final class DownloadStatistics {
|
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|
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private DownloadStatistics() {
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// Utility class
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}
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|
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/**
|
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* Calculates the overall download percentage.
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*
|
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* @param downloadedMB Downloaded amount in MB
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* @param totalMB Total file size in MB
|
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* @return Percentage between 0 and 100
|
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*/
|
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public static double calculatePercentage(double downloadedMB, double totalMB) {
|
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|
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if (totalMB <= 0) {
|
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return 100.0;
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}
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|
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return (downloadedMB / totalMB) * 100.0;
|
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}
|
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|
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/**
|
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* Calculates the average download speed.
|
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*
|
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* @param downloadedMB Downloaded amount in MB
|
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* @param elapsedMillis Elapsed time in milliseconds
|
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* @return Speed in MB/s
|
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*/
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public static double calculateSpeed(double downloadedMB, long elapsedMillis) {
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|
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if (elapsedMillis <= 0) {
|
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return 0.0;
|
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}
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|
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return downloadedMB / (elapsedMillis / 1000.0);
|
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}
|
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|
||||
/**
|
||||
* Calculates the estimated remaining time.
|
||||
*
|
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* @param downloadedMB Downloaded amount
|
||||
* @param totalMB Total size
|
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* @param speedMBps Current speed
|
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* @return Remaining time in seconds
|
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*/
|
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public static double calculateETA(
|
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double downloadedMB,
|
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double totalMB,
|
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double speedMBps) {
|
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|
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if (speedMBps <= 0) {
|
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return Double.POSITIVE_INFINITY;
|
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}
|
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|
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double remaining = totalMB - downloadedMB;
|
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|
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if (remaining <= 0) {
|
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return 0;
|
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}
|
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|
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return remaining / speedMBps;
|
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}
|
||||
|
||||
/**
|
||||
* Formats a duration into HH:MM:SS.
|
||||
*
|
||||
* @param seconds Time in seconds
|
||||
* @return Formatted time string
|
||||
*/
|
||||
public static String formatTime(double seconds) {
|
||||
|
||||
if (Double.isInfinite(seconds) || Double.isNaN(seconds)) {
|
||||
return "--:--:--";
|
||||
}
|
||||
|
||||
int totalSeconds = (int) Math.round(seconds);
|
||||
|
||||
int hours = totalSeconds / 3600;
|
||||
int minutes = (totalSeconds % 3600) / 60;
|
||||
int secs = totalSeconds % 60;
|
||||
|
||||
return String.format("%02d:%02d:%02d", hours, minutes, secs);
|
||||
}
|
||||
}
|
||||
@@ -3,9 +3,9 @@ import java.util.Random;
|
||||
/**
|
||||
* Simulates downloading a single chunk of a file.
|
||||
*
|
||||
* <p>This class is intentionally provided as a skeleton for students.
|
||||
* The main multithreading and simulation logic should be completed
|
||||
* in the run() method.</p>
|
||||
* Each DownloadWorker is responsible for exactly one ChunkStatus object.
|
||||
* Since every worker only modifies its own ChunkStatus, no explicit
|
||||
* synchronization is required.
|
||||
*/
|
||||
public class DownloadWorker implements Runnable {
|
||||
|
||||
@@ -21,23 +21,80 @@ public class DownloadWorker implements Runnable {
|
||||
|
||||
@Override
|
||||
public void run() {
|
||||
// TODO: Record the chunk start time in chunkStatus.
|
||||
|
||||
// Record start time
|
||||
chunkStatus.setStartTimeMs(System.currentTimeMillis());
|
||||
|
||||
double downloaded = 0.0;
|
||||
|
||||
// TODO: Print a message that this chunk has started downloading.
|
||||
System.out.printf(
|
||||
"[%s] Chunk %d started (%.1f MB)%n",
|
||||
Thread.currentThread().getName(),
|
||||
chunkStatus.getChunkId(),
|
||||
chunkStatus.getChunkSizeMB()
|
||||
);
|
||||
|
||||
while (downloaded < chunkStatus.getChunkSizeMB()) {
|
||||
// TODO: Generate a random sleep delay between min and max delay.
|
||||
// TODO: Sleep for that delay.
|
||||
// TODO: Generate a random download amount for this step.
|
||||
// TODO: Increase downloaded, but do not go beyond chunk size.
|
||||
// TODO: Save the updated downloaded value into chunkStatus.
|
||||
// TODO: Optionally print step-by-step progress.
|
||||
|
||||
try {
|
||||
// Random delay
|
||||
int delay = random.nextInt(
|
||||
config.getMaxStepDelayMs() - config.getMinStepDelayMs() + 1
|
||||
) + config.getMinStepDelayMs();
|
||||
|
||||
Thread.sleep(delay);
|
||||
|
||||
} catch (InterruptedException e) {
|
||||
|
||||
System.out.printf(
|
||||
"[%s] Chunk %d interrupted.%n",
|
||||
Thread.currentThread().getName(),
|
||||
chunkStatus.getChunkId()
|
||||
);
|
||||
|
||||
Thread.currentThread().interrupt();
|
||||
return;
|
||||
}
|
||||
|
||||
// Random download amount
|
||||
double step =
|
||||
config.getMinStepDownloadMB()
|
||||
+ random.nextDouble()
|
||||
* (config.getMaxStepDownloadMB()
|
||||
- config.getMinStepDownloadMB());
|
||||
|
||||
downloaded += step;
|
||||
|
||||
// Prevent downloading beyond chunk size
|
||||
if (downloaded > chunkStatus.getChunkSizeMB()) {
|
||||
downloaded = chunkStatus.getChunkSizeMB();
|
||||
}
|
||||
|
||||
// Save progress
|
||||
chunkStatus.setDownloadedMB(downloaded);
|
||||
|
||||
// Optional step-by-step debug output
|
||||
System.out.printf(
|
||||
"[%s] Chunk %d: %.1f/%.1f MB (%.1f%%)%n",
|
||||
Thread.currentThread().getName(),
|
||||
chunkStatus.getChunkId(),
|
||||
chunkStatus.getDownloadedMB(),
|
||||
chunkStatus.getChunkSizeMB(),
|
||||
chunkStatus.getProgressPercentage()
|
||||
);
|
||||
}
|
||||
|
||||
// TODO: Mark the chunk as completed.
|
||||
// TODO: Record the chunk end time in chunkStatus.
|
||||
// TODO: Print a message that this chunk has finished downloading.
|
||||
}
|
||||
// Mark completed
|
||||
chunkStatus.setCompleted(true);
|
||||
|
||||
}
|
||||
// Record finish time
|
||||
chunkStatus.setEndTimeMs(System.currentTimeMillis());
|
||||
|
||||
System.out.printf(
|
||||
"[%s] Chunk %d completed in %.2f seconds.%n",
|
||||
Thread.currentThread().getName(),
|
||||
chunkStatus.getChunkId(),
|
||||
chunkStatus.getDownloadDurationMs() / 1000.0
|
||||
);
|
||||
}
|
||||
}
|
||||
+106
-45
@@ -2,11 +2,16 @@ import java.util.ArrayList;
|
||||
import java.util.List;
|
||||
|
||||
public class Main {
|
||||
|
||||
public static void main(String[] args) {
|
||||
System.out.println("=== Simulated Download Manager ===");
|
||||
|
||||
System.out.println("=================================================");
|
||||
System.out.println(" SIMULATED DOWNLOAD MANAGER");
|
||||
System.out.println("=================================================");
|
||||
|
||||
// 1. Read config
|
||||
DownloadConfig config;
|
||||
|
||||
try {
|
||||
config = ConfigReader.readConfig("download_config.txt");
|
||||
} catch (Exception e) {
|
||||
@@ -14,94 +19,150 @@ public class Main {
|
||||
return;
|
||||
}
|
||||
|
||||
System.out.println("File name: " + config.getFileName());
|
||||
System.out.println("Total size (MB): " + config.getTotalSizeMB());
|
||||
System.out.println("Chunk count: " + config.getChunkCount());
|
||||
System.out.println("File Name : " + config.getFileName());
|
||||
System.out.println("File Size : " + config.getTotalSizeMB() + " MB");
|
||||
System.out.println("Chunk Count: " + config.getChunkCount());
|
||||
System.out.println("Delay Range: "
|
||||
+ config.getMinStepDelayMs()
|
||||
+ " - "
|
||||
+ config.getMaxStepDelayMs()
|
||||
+ " ms");
|
||||
System.out.println("Step Range : "
|
||||
+ config.getMinStepDownloadMB()
|
||||
+ " - "
|
||||
+ config.getMaxStepDownloadMB()
|
||||
+ " MB");
|
||||
System.out.println();
|
||||
|
||||
long simulationStart = System.currentTimeMillis();
|
||||
|
||||
// 2. Create chunks
|
||||
List<ChunkStatus> chunks = ChunkUtils.createChunks(
|
||||
config.getTotalSizeMB(),
|
||||
config.getChunkCount()
|
||||
);
|
||||
|
||||
System.out.println("Created Chunks:");
|
||||
|
||||
for (ChunkStatus chunk : chunks) {
|
||||
System.out.printf(
|
||||
" Chunk %d -> %.1f MB%n",
|
||||
chunk.getChunkId(),
|
||||
chunk.getChunkSizeMB()
|
||||
);
|
||||
}
|
||||
|
||||
System.out.println();
|
||||
|
||||
// 3. Create worker threads
|
||||
List<Thread> workerThreads = new ArrayList<>();
|
||||
|
||||
for (ChunkStatus chunk : chunks) {
|
||||
|
||||
DownloadWorker worker = new DownloadWorker(chunk, config);
|
||||
Thread workerThread = new Thread(worker, "Worker-" + chunk.getChunkId());
|
||||
|
||||
Thread workerThread = new Thread(
|
||||
worker,
|
||||
"Worker-" + chunk.getChunkId()
|
||||
);
|
||||
|
||||
workerThreads.add(workerThread);
|
||||
|
||||
// TODO:
|
||||
// Students may print helpful debug information here,
|
||||
// for example which chunk is assigned to which worker thread.
|
||||
System.out.printf(
|
||||
"Assigned Chunk %d to %s%n",
|
||||
chunk.getChunkId(),
|
||||
workerThread.getName()
|
||||
);
|
||||
}
|
||||
|
||||
System.out.println();
|
||||
|
||||
// 4. Create and start monitor thread
|
||||
ProgressMonitor monitor = new ProgressMonitor(config, chunks);
|
||||
Thread monitorThread = new Thread(monitor, "Progress-Monitor");
|
||||
|
||||
// TODO:
|
||||
// Start the monitor thread before starting the workers
|
||||
// so that progress can be displayed while downloading happens.
|
||||
//
|
||||
// Example idea:
|
||||
// monitorThread.start();
|
||||
Thread monitorThread = new Thread(
|
||||
monitor,
|
||||
"Progress-Monitor"
|
||||
);
|
||||
|
||||
System.out.println("Starting monitor thread...");
|
||||
monitorThread.start();
|
||||
|
||||
// 5. Start worker threads
|
||||
// TODO:
|
||||
// Start each worker thread in workerThreads.
|
||||
// Use a loop and call start() on each thread.
|
||||
System.out.println("Starting worker threads...");
|
||||
|
||||
for (Thread workerThread : workerThreads) {
|
||||
workerThread.start();
|
||||
}
|
||||
|
||||
// 6. Wait for workers to finish
|
||||
// TODO:
|
||||
// Wait for all worker threads to complete by calling join().
|
||||
// This should be done inside a try-catch block for InterruptedException.
|
||||
//
|
||||
// Hint:
|
||||
// for (Thread thread : workerThreads) {
|
||||
// thread.join();
|
||||
// }
|
||||
try {
|
||||
|
||||
// TODO:
|
||||
// After all workers finish, the monitor thread may also need to stop.
|
||||
// Depending on how ProgressMonitor is implemented, students may:
|
||||
// - wait for it to finish on its own, or
|
||||
// - add a stopping mechanism in ProgressMonitor later.
|
||||
//
|
||||
// If your monitor finishes automatically, you may join it here.
|
||||
for (Thread workerThread : workerThreads) {
|
||||
workerThread.join();
|
||||
}
|
||||
|
||||
// NOTE:
|
||||
// this final report may show 0 progress because no worker has actually run yet.
|
||||
// Until students complete the thread start/join TODOs above,
|
||||
// Wait for monitor to finish automatically
|
||||
monitorThread.join();
|
||||
|
||||
} catch (InterruptedException e) {
|
||||
|
||||
System.out.println("Main thread interrupted.");
|
||||
|
||||
Thread.currentThread().interrupt();
|
||||
return;
|
||||
}
|
||||
|
||||
long simulationEnd = System.currentTimeMillis();
|
||||
|
||||
// 7. Print final report
|
||||
System.out.println();
|
||||
System.out.println("=== Final Report ===");
|
||||
System.out.println("=================================================");
|
||||
System.out.println(" FINAL REPORT");
|
||||
System.out.println("=================================================");
|
||||
|
||||
int completedChunks = 0;
|
||||
double downloadedMB = 0.0;
|
||||
|
||||
for (ChunkStatus chunk : chunks) {
|
||||
|
||||
downloadedMB += chunk.getDownloadedMB();
|
||||
|
||||
if (chunk.isCompleted()) {
|
||||
completedChunks++;
|
||||
}
|
||||
|
||||
System.out.println(
|
||||
"Chunk " + chunk.getChunkId()
|
||||
+ ": " + chunk.getDownloadedMB()
|
||||
+ "/" + chunk.getChunkSizeMB()
|
||||
+ " MB"
|
||||
System.out.printf(
|
||||
"Chunk %-2d | Downloaded: %6.1f / %6.1f MB | %-10s | Duration: %.2f sec%n",
|
||||
chunk.getChunkId(),
|
||||
chunk.getDownloadedMB(),
|
||||
chunk.getChunkSizeMB(),
|
||||
chunk.isCompleted() ? "Completed" : "Incomplete",
|
||||
chunk.getDownloadDurationMs() / 1000.0
|
||||
);
|
||||
}
|
||||
|
||||
System.out.println();
|
||||
System.out.println("Completed chunks: " + completedChunks + "/" + chunks.size());
|
||||
System.out.println("Downloaded total: " + downloadedMB + "/" + config.getTotalSizeMB() + " MB");
|
||||
|
||||
System.out.println(
|
||||
"Completed Chunks: "
|
||||
+ completedChunks
|
||||
+ "/"
|
||||
+ chunks.size()
|
||||
);
|
||||
|
||||
System.out.printf(
|
||||
"Downloaded Total: %.1f / %d MB%n",
|
||||
downloadedMB,
|
||||
config.getTotalSizeMB()
|
||||
);
|
||||
|
||||
System.out.printf(
|
||||
"Execution Time : %.2f seconds%n",
|
||||
(simulationEnd - simulationStart) / 1000.0
|
||||
);
|
||||
|
||||
System.out.println();
|
||||
System.out.println("Simulation finished.");
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -16,18 +16,11 @@ 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
|
||||
|
||||
long startTime = System.currentTimeMillis();
|
||||
|
||||
while (true) {
|
||||
|
||||
double totalDownloadedMB = 0.0;
|
||||
int completedChunks = 0;
|
||||
|
||||
@@ -39,31 +32,68 @@ public class ProgressMonitor implements Runnable {
|
||||
}
|
||||
}
|
||||
|
||||
double percent = 0.0;
|
||||
if (totalSizeMB > 0) {
|
||||
percent = (totalDownloadedMB * 100.0) / totalSizeMB;
|
||||
}
|
||||
|
||||
System.out.printf(
|
||||
"Progress for %s: %.1f/%.1f MB (%.2f%%), completed chunks: %d/%d%n",
|
||||
fileName,
|
||||
|
||||
long elapsedMillis = System.currentTimeMillis() - startTime;
|
||||
double elapsedSeconds = elapsedMillis / 1000.0;
|
||||
|
||||
|
||||
|
||||
double remainingMB = totalSizeMB - totalDownloadedMB;
|
||||
|
||||
double percent = DownloadStatistics.calculatePercentage(
|
||||
totalDownloadedMB,
|
||||
(double) totalSizeMB,
|
||||
percent,
|
||||
completedChunks,
|
||||
totalSizeMB
|
||||
);
|
||||
|
||||
double speed = DownloadStatistics.calculateSpeed(
|
||||
totalDownloadedMB,
|
||||
elapsedMillis
|
||||
);
|
||||
|
||||
double eta = DownloadStatistics.calculateETA(
|
||||
totalDownloadedMB,
|
||||
totalSizeMB,
|
||||
speed
|
||||
);
|
||||
|
||||
// Refresh console
|
||||
ConsoleUI.clearScreen();
|
||||
|
||||
ConsoleUI.printHeader(
|
||||
fileName,
|
||||
totalSizeMB,
|
||||
chunks.size()
|
||||
);
|
||||
|
||||
ConsoleUI.printOverallProgress(
|
||||
totalDownloadedMB,
|
||||
totalSizeMB,
|
||||
speed,
|
||||
eta
|
||||
);
|
||||
|
||||
// TODO:
|
||||
// If all chunks are completed, print a final message and exit the loop
|
||||
ConsoleUI.printChunks(chunks);
|
||||
|
||||
// Finished?
|
||||
if (completedChunks == chunks.size()) {
|
||||
|
||||
System.out.println("Download completed successfully!");
|
||||
System.out.printf(
|
||||
"Total download time: %.2f seconds%n",
|
||||
elapsedSeconds
|
||||
);
|
||||
|
||||
ConsoleUI.printFinalReport(chunks);
|
||||
return;
|
||||
}
|
||||
|
||||
try {
|
||||
Thread.sleep(monitorDelayMs);
|
||||
} catch (InterruptedException e) {
|
||||
System.out.println("Progress monitor interrupted.");
|
||||
Thread.currentThread().interrupt();
|
||||
return;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user