From 1cfc40afeddb12c3dc5a2ee951b817474d7136f0 Mon Sep 17 00:00:00 2001
From: LordBaryhobal <lordbaryhobal@gmail.com>
Date: Tue, 7 Jan 2025 14:19:04 +0100
Subject: [PATCH] added ex U

---
 src/exercises/ex_u/FamilyMember.java          | 22 ++++++++++++++++++
 .../TestingCountDownLatch_FamilyTrip.java     | 23 +++++++++++++++++++
 src/exercises/ex_u/Vehicle.java               | 14 +++++++++++
 3 files changed, 59 insertions(+)
 create mode 100644 src/exercises/ex_u/FamilyMember.java
 create mode 100644 src/exercises/ex_u/TestingCountDownLatch_FamilyTrip.java
 create mode 100644 src/exercises/ex_u/Vehicle.java

diff --git a/src/exercises/ex_u/FamilyMember.java b/src/exercises/ex_u/FamilyMember.java
new file mode 100644
index 0000000..135aa4b
--- /dev/null
+++ b/src/exercises/ex_u/FamilyMember.java
@@ -0,0 +1,22 @@
+package exercises.ex_u;
+
+import java.util.concurrent.CountDownLatch;
+
+public class FamilyMember implements Runnable {
+    private final String name;
+    private final Vehicle vehicle;
+    private final CountDownLatch countDownLatch;
+
+    public FamilyMember(String name, Vehicle vehicle, CountDownLatch countDownLatch) {
+        this.name = name;
+        this.vehicle = vehicle;
+        this.countDownLatch = countDownLatch;
+    }
+
+    @Override
+    public void run() {
+        vehicle.addSuitcase(name + "'s suitcase");
+        System.out.println(name + " has loaded their suitcase");
+        countDownLatch.countDown();
+    }
+}
diff --git a/src/exercises/ex_u/TestingCountDownLatch_FamilyTrip.java b/src/exercises/ex_u/TestingCountDownLatch_FamilyTrip.java
new file mode 100644
index 0000000..3c8c7df
--- /dev/null
+++ b/src/exercises/ex_u/TestingCountDownLatch_FamilyTrip.java
@@ -0,0 +1,23 @@
+package exercises.ex_u;
+
+import java.util.concurrent.CountDownLatch;
+
+public class TestingCountDownLatch_FamilyTrip {
+    public static void main(String[] args) throws InterruptedException {
+        Vehicle seatAlhambra = new Vehicle();
+        seatAlhambra.printVehicleContent();
+        String[] family = {"Jean", "Anna", "Joseph", "Martha", "Eleonore", "Paul", "Catarina"};
+        // Create a countDownLatch
+        CountDownLatch countDownLatch = new CountDownLatch(family.length);
+
+        // Start the family members
+        // and synchronize them before the start
+        for (int i = 0; i < family.length; i++) {
+            new Thread(new FamilyMember(family[i], seatAlhambra, countDownLatch)).start();
+        }
+        countDownLatch.await();
+
+        seatAlhambra.printVehicleContent();
+        System.out.println("Family trip can start");
+    }
+}
\ No newline at end of file
diff --git a/src/exercises/ex_u/Vehicle.java b/src/exercises/ex_u/Vehicle.java
new file mode 100644
index 0000000..9108372
--- /dev/null
+++ b/src/exercises/ex_u/Vehicle.java
@@ -0,0 +1,14 @@
+package exercises.ex_u;
+
+import java.util.Queue;
+import java.util.concurrent.ConcurrentLinkedQueue;
+
+public class Vehicle {
+    private Queue<String> suitcases = new ConcurrentLinkedQueue<>();
+    public void addSuitcase(String suitcase) {
+        suitcases.add(suitcase);
+    }
+    public void printVehicleContent() {
+        System.out.println("Suitcases: " + suitcases);
+    }
+}