Done Ex5 but untestes

hw1/Ex5/pom.xml

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<modelVersion>4.0.0</modelVersion>
+
+<groupId>ch.usi.inf.pf3.hw1</groupId>
+<artifactId>ex5</artifactId>
+<version>1.0-SNAPSHOT</version>
+<packaging>jar</packaging>
+
+<build>
+    <finalName>${artifactId}</finalName>
+    <plugins>
+        <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-compiler-plugin</artifactId>
+            <configuration>
+                <source>1.8</source>
+                <target>1.8</target>
+            </configuration>
+        </plugin>
+        <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-jar-plugin</artifactId>
+            <configuration>
+                <archive>
+                    <manifest>
+                        <mainClass>reentrantrwlock.Main</mainClass>
+                    </manifest>
+                </archive>
+            </configuration>
+        </plugin>
+    </plugins>
+</build>
+</project>

hw1/Ex5/src/main/java/reentrantrwlock/Main.java

@@ -5,7 +5,7 @@ import java.util.Random;
 import java.util.ArrayList;
 
 public class Main {
-	// Initial number of movies in the catalog 
+	// Initial number of movies in the catalog
 	private static final int INITIAL_SIZE = 500;
 	// Maximum duration of a movie in the catalog
 	private static final int MAX_DURATION = 3000;
@@ -21,7 +21,7 @@ public class Main {
 		MovieCatalog myCatalog = new MovieCatalog();
 		// Populating the catalog with a initial set of movies
 		List<Movie> movies = new ArrayList<>(INITIAL_SIZE);
-		Random generator = new Random();	
+		Random generator = new Random();
 		for (int i = 0; i < INITIAL_SIZE; i++) {
 			movies.add(
 					new Movie("Movie" + i, generator.nextInt(MAX_DURATION)));
@@ -31,6 +31,7 @@ public class Main {
 		creator.start();
 		creator.join();
 		System.out.println("The movie catalog has been created.");
+
 		// Starting the threads simulating the movie watchers
 		for (int i = 0; i < NUM_WATCHERS; i++) {
 			new Thread(new WatcherSimulation(myCatalog), "Watcher" + i).start();

hw1/Ex5/src/main/java/reentrantrwlock/MovieCatalog.java

@@ -7,6 +7,7 @@ import java.util.TreeMap;
 import java.util.ArrayList;
 import java.util.concurrent.locks.Lock;
 import java.util.concurrent.locks.ReentrantReadWriteLock;
+import java.util.Iterator;
 
 public class MovieCatalog {
 
@@ -27,7 +28,11 @@ public class MovieCatalog {
 	 * @return the size of this catalog
 	 */
 	public int getSize() {
-		// TODO: Implement method getSize
+		int length;
+		rLock.lock();
+		length = movies.size();
+		rLock.unlock();
+		return length;
 	}
 
 	/**
@@ -37,15 +42,23 @@ public class MovieCatalog {
 	 * null if the movie is not in the catalog
 	 */
 	public Movie getMovie(String title) {
-		//TODO: Implement method getMovie
+		Movie m;
+		rLock.lock();
+		m = movies.get(title);
+		rLock.unlock();
+		return m;
 	}
 
 	/**
 	 * Returns the list of all movie titles in this catalog
-	 * @return a list of the movie titles in this catalog 
+	 * @return a list of the movie titles in this catalog
 	 */
 	public List<String> getTitles() {
-		//TODO: Implement method getTitles
+		List<String> titles;
+		rLock.lock();
+		titles = new ArrayList<>(movies.keySet());
+		rLock.unlock();
+		return titles;
 	}
 
 	/**
@@ -53,7 +66,16 @@ public class MovieCatalog {
 	 * @return a randomly selected movie from this catalog
 	 */
 	public Movie getRandomMovie() {
-		// TODO: Implement method getRandomMovie
+		Movie m;
+		rLock.lock();
+		final int r = generator.nextInt(movies.size()) - 1;
+		final Iterator<Movie> it = movies.values().iterator();
+		for (int i = 0; i < r; i++) {
+			it.next();
+		}
+		m = it.next();
+		rLock.unlock();
+		return m;
 	}
 
 	/**
@@ -61,6 +83,8 @@ public class MovieCatalog {
 	 * @param the movie to be added to the catalog
 	 */
 	public void addMovie(Movie movie) {
-		//TODO: Implement method addMovie
+		wLock.lock();
+		movies.put(movie.getTitle(), movie);
+		wLock.unlock();
 	}
 }